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These are the user uploaded subtitles that are being translated: 1 00:28:59,650 --> 00:29:02,860 And once those legs are dropped in the water 2 00:28:17,580 --> 00:28:21,850 Of entire floating cities called "blue cities." 3 00:28:21,850 --> 00:28:25,620 We think that our blue cities will first just grow 4 00:28:25,620 --> 00:28:29,390 From beyond to the waterfront but still be part of our city, 5 00:28:29,390 --> 00:28:31,790 And maybe in the near future the first communities 6 00:28:31,790 --> 00:28:35,830 Will be created on the middle of the ocean. 7 00:28:35,830 --> 00:28:38,100 Narrator: In the blue cities of the future, 8 00:28:38,100 --> 00:28:42,340 This would be a dream house. 9 00:28:42,340 --> 00:28:45,240 It's the first ever self-propelled floating home. 10 00:28:45,240 --> 00:28:49,610 ♪ 11 00:28:49,610 --> 00:28:53,910 It borrows technology from oil platforms. 12 00:28:53,920 --> 00:28:55,680 It's called the jack-up system. 13 00:28:55,680 --> 00:28:59,650 It's made of four hydraulic legs 14 00:28:15,310 --> 00:28:17,580 Narrator: The ultimate vision is the construction 15 00:29:02,860 --> 00:29:04,620 And touch the sea bottom, 16 00:29:04,630 --> 00:29:08,230 In our case up to 20, 25 feet of water. 17 00:29:08,230 --> 00:29:10,930 That enables us to completely stabilize the boat 18 00:29:10,930 --> 00:29:15,400 And even lift it out of the water. 19 00:29:15,400 --> 00:29:18,040 One of the most advanced features on this prototype 20 00:29:18,040 --> 00:29:19,940 Is it doesn't need to be towed. 21 00:29:19,940 --> 00:29:24,340 It can move under its own power. 22 00:29:24,350 --> 00:29:26,210 Derouin: They're completely solar electric, 23 00:29:26,210 --> 00:29:28,080 So the... (speaks indistinctly) 24 00:29:28,080 --> 00:29:31,120 Is equipped with two electric thrusters 25 00:29:31,120 --> 00:29:34,620 That allow it to move at speeds up to seven knots. 26 00:29:34,620 --> 00:29:37,490 It's completely sustainable and self-sustained, 27 00:27:36,000 --> 00:27:38,910 Gets hit by some of the most vicious hurricanes, 28 00:26:59,330 --> 00:27:02,300 And it seeps into our pipes. 29 00:27:02,300 --> 00:27:03,700 Narrator: Downtown fort lauderdale 30 00:27:03,710 --> 00:27:05,140 Would regularly flood 31 00:27:05,140 --> 00:27:07,170 If it weren't for these storm stations 32 00:27:07,180 --> 00:27:10,280 And another genius solution. 33 00:27:10,280 --> 00:27:15,620 The city has installed 162 of these one-way valves. 34 00:27:15,620 --> 00:27:17,750 We call them "tidal valves." 35 00:27:17,750 --> 00:27:22,020 And the idea is that while water cannot move in this direction -- 36 00:27:22,020 --> 00:27:25,660 If I put my hand in I can't make it go anywhere, 37 00:27:25,660 --> 00:27:29,700 But if there's water from the sky it can then open up 38 00:27:29,700 --> 00:27:34,670 And allow the water out. 39 00:27:34,670 --> 00:27:36,000 Narrator: This part of the u.S. 40 00:29:37,490 --> 00:29:40,790 So it gives a lot of freedom 41 00:27:38,910 --> 00:27:43,180 Leaving architects to explore the idea of "aquatecture" 42 00:27:43,180 --> 00:27:46,750 Or floating buildings. 43 00:27:46,750 --> 00:27:50,820 Building underwater is one way to make the city 44 00:27:50,820 --> 00:27:56,490 More resilient for the future and to adapt to rising seas. 45 00:27:56,490 --> 00:27:58,790 So what we do, we call this aquatecture, 46 00:27:58,790 --> 00:28:03,130 And you can compare it with architecture on land 47 00:28:03,130 --> 00:28:05,670 But then with floating foundations. 48 00:28:05,670 --> 00:28:08,070 So the buildings, the look and feel -- 49 00:28:08,070 --> 00:28:10,440 It's almost the same as the structures on land, 50 00:28:10,440 --> 00:28:12,770 But it has the ability to cope with climate change, 51 00:28:12,770 --> 00:28:15,310 Sea level rise, and with floods. 52 00:31:30,110 --> 00:31:32,110 To make sure that these kind of neighborhoods 53 00:31:03,510 --> 00:31:04,940 But we need these kind of clients. 54 00:31:04,950 --> 00:31:06,310 We need these kind of companies 55 00:31:06,310 --> 00:31:08,480 To bring this kind of engineering 56 00:31:08,480 --> 00:31:10,820 Because the innovation is being paid by the rich. 57 00:31:10,820 --> 00:31:13,750 But then we can bring it to more vulnerable 58 00:31:13,760 --> 00:31:15,260 And more poor countries. 59 00:31:15,260 --> 00:31:16,790 So, you see, for instance, in bangladesh 60 00:31:16,790 --> 00:31:19,560 Where there are so many slums around the water 61 00:31:19,560 --> 00:31:22,560 And they are being threatened by every sea level rise 62 00:31:22,560 --> 00:31:24,030 And every water rise. 63 00:31:24,030 --> 00:31:26,700 We can bring there very small floating schools, 64 00:31:26,700 --> 00:31:30,100 Floating hospitals, floating energy plants 65 00:31:00,210 --> 00:31:03,510 So it's not for everybody. 66 00:31:32,110 --> 00:31:33,510 Are being treated well 67 00:31:33,510 --> 00:31:37,880 And being upgraded from the situation they're in now. 68 00:31:37,880 --> 00:31:39,810 Narrator: A passion for profit 69 00:31:39,810 --> 00:31:42,580 May be driving innovation in florida. 70 00:31:42,580 --> 00:31:44,420 But in the waterlogged netherlands, 71 00:31:44,420 --> 00:31:47,650 There's another kind of passion at work. 72 00:31:47,660 --> 00:31:56,200 ♪ 73 00:31:56,200 --> 00:31:58,430 There's a whole community here made up of people 74 00:31:58,430 --> 00:32:01,130 Who love to live on the water. 75 00:32:01,140 --> 00:32:04,540 And they figured out how to do it more cheaply. 76 00:32:04,540 --> 00:32:06,510 It's called schoonschip, 77 00:32:06,510 --> 00:32:10,140 And the final boats are coming in today. 78 00:30:17,700 --> 00:30:20,530 And good thing, because climate change 79 00:29:40,800 --> 00:29:43,900 To actually move your floating house 80 00:29:43,900 --> 00:29:46,400 Or your boat to different locations 81 00:29:46,400 --> 00:29:49,270 And you don't need to be plugged to shore power or utility. 82 00:29:49,270 --> 00:29:50,540 You can change your view, 83 00:29:50,540 --> 00:29:54,040 You can change your neighbors if you want. 84 00:29:54,040 --> 00:29:56,680 Narrator: If the houses in venice were designed like this, 85 00:29:56,680 --> 00:30:02,020 They wouldn't need to get their water from underground. 86 00:30:02,020 --> 00:30:06,290 We collect all the rainwater from this roof through drains, 87 00:30:06,290 --> 00:30:09,090 Store it into a freshwater compartment, 88 00:30:09,090 --> 00:30:13,930 And then have a filtration and purification systems. 89 00:30:13,930 --> 00:30:15,830 Narrator: Houseboat design has come a long way 90 00:30:15,830 --> 00:30:17,700 In the last 20 years. 91 00:26:55,530 --> 00:26:59,330 That ground water comes through what is a very porous geology, 92 00:30:20,540 --> 00:30:23,770 Is making life on the water more dangerous. 93 00:30:23,770 --> 00:30:27,040 But do you need to be an a-list celebrity to afford 94 00:30:27,040 --> 00:30:30,140 To live safely on the water? 95 00:30:37,620 --> 00:30:39,650 Narrator: Venice may be one of the most famous 96 00:30:39,650 --> 00:30:43,820 Sinking cities in the world, but it isn't the only one. 97 00:30:43,830 --> 00:30:45,830 Areas right here in america 98 00:30:45,830 --> 00:30:48,230 Are dealing with flooding issues of their own, 99 00:30:48,230 --> 00:30:51,300 And architects are designing floating buildings, 100 00:30:51,300 --> 00:30:55,170 Or aquatecture, in response. 101 00:30:55,170 --> 00:30:58,040 Olthius: So we are here in a very expensive building. 102 00:30:58,040 --> 00:31:00,210 I think it's more than $5 million, 103 00:23:29,960 --> 00:23:32,960 There, they have a big 104 00:22:46,880 --> 00:22:50,080 But how do we inject water deep into the ground 105 00:22:50,090 --> 00:22:55,120 Without bringing down venetian architecture into the lagoon? 106 00:22:55,120 --> 00:22:58,190 A major issue is to obtain enough lift 107 00:22:58,190 --> 00:23:03,430 That it is more or less uniform as possible. 108 00:23:03,430 --> 00:23:08,440 Narrator: It's risky, but it's possible. 109 00:23:08,440 --> 00:23:10,340 Should we take a chance on this? 110 00:23:10,340 --> 00:23:15,680 ♪ 111 00:23:15,680 --> 00:23:19,150 It turns out, this technology has been used off 112 00:23:19,150 --> 00:23:20,680 The coast of california. 113 00:23:20,680 --> 00:23:24,620 ♪ 114 00:23:24,620 --> 00:23:26,820 The wilmington oil field 115 00:23:26,820 --> 00:23:29,960 Close or in the nearby of los angeles, 116 00:22:43,680 --> 00:22:46,880 To the porous sand underneath. 117 00:23:32,960 --> 00:23:36,960 Land subsidence in the '50s 118 00:23:36,970 --> 00:23:38,970 Due to the production of oil 119 00:23:38,970 --> 00:23:42,070 From this quite shallow reservoir. 120 00:23:42,070 --> 00:23:45,410 And when they recognize that this was really a big problem, 121 00:23:45,410 --> 00:23:48,140 What they've done -- they start injecting. 122 00:23:48,140 --> 00:23:52,210 They inject a lot of groundwater at a depth 123 00:23:52,210 --> 00:23:55,180 Ranging between 600 to 1,000 meters. 124 00:23:55,180 --> 00:23:56,780 They also serve a rebound 125 00:23:56,790 --> 00:24:01,690 So an uplift on the area around the injection well, 126 00:24:01,690 --> 00:24:05,260 That amount around 30 centimeter. 127 00:24:05,260 --> 00:24:08,330 Narrator: Fluid injection has also been used successfully 128 00:24:08,330 --> 00:24:12,770 To give a lift to tokyo and taipei. 129 00:21:59,170 --> 00:22:02,800 Then our solution of raising the city isn't more effective 130 00:21:22,330 --> 00:21:25,630 But the sewer system couldn't handle the runoff. 131 00:21:25,630 --> 00:21:28,370 In the mid-1800s, engineers figured out 132 00:21:28,370 --> 00:21:31,340 How to raise the entire center of the city 133 00:21:31,340 --> 00:21:33,810 By more than three feet. 134 00:21:33,810 --> 00:21:37,540 They used a system of hydraulic jacks, or jackscrews, 135 00:21:37,550 --> 00:21:41,320 To lift the buildings one inch at a time. 136 00:21:41,320 --> 00:21:42,980 They filled the gap with dirt 137 00:21:42,990 --> 00:21:46,020 When the new sewer pipes were laid. 138 00:21:46,020 --> 00:21:49,260 In other cases, whole buildings were dug up, 139 00:21:49,260 --> 00:21:52,960 Put on logs, and rolled to a new location. 140 00:21:52,960 --> 00:21:55,360 ♪ 141 00:21:55,360 --> 00:21:59,170 There's a chance that the water around venice could keep rising. 142 00:24:12,770 --> 00:24:16,900 Surely, it could work under our 160 square miles 143 00:22:02,810 --> 00:22:06,270 Than the floodgates that are already in place. 144 00:22:06,280 --> 00:22:09,880 And what if water levels happen to drop? 145 00:22:09,880 --> 00:22:14,180 Venice and its gondolas could be left high and dry. 146 00:22:14,180 --> 00:22:18,420 But there may be another way to raise the city. 147 00:22:18,420 --> 00:22:21,890 ♪ 148 00:22:21,890 --> 00:22:24,160 It's called injection. 149 00:22:24,160 --> 00:22:27,060 Here's how it would work under venice. 150 00:22:27,060 --> 00:22:31,870 A series of wells would be dug in a massive circle. 151 00:22:31,870 --> 00:22:35,740 Over a period of 10 years, sea water would be injected 152 00:22:35,740 --> 00:22:40,840 Using the world's mightiest high-pressure gas turbine pumps 153 00:22:40,840 --> 00:22:43,680 That extend through the clay layer below venice 154 00:26:20,360 --> 00:26:23,130 South florida has a rather unique geology 155 00:25:40,890 --> 00:25:44,690 So far, we've decided moving it, rebuilding it, 156 00:25:44,690 --> 00:25:50,160 Or injecting water underneath it won't solve all of our problems. 157 00:25:50,170 --> 00:25:55,270 So maybe it's time to check out the venice of america. 158 00:25:55,270 --> 00:25:59,610 It has a lot of the same issues. 159 00:25:59,610 --> 00:26:01,710 Gassman: So as you can see, the water is nearly 160 00:26:01,710 --> 00:26:04,080 At the top of this sea wall. 161 00:26:04,080 --> 00:26:06,850 In the next 50 years, we're expecting the water level 162 00:26:06,850 --> 00:26:08,520 To come up to about my knee, 163 00:26:08,520 --> 00:26:10,950 Which is why we're gonna raise the sea wall 164 00:26:10,950 --> 00:26:14,690 About up to mid-chest for me. 165 00:26:14,690 --> 00:26:16,160 Narrator: Like venice in Italy, 166 00:26:16,160 --> 00:26:20,360 The coast of florida is sinking, too. 167 00:25:37,250 --> 00:25:40,890 To save the sinking city of venice. 168 00:26:23,130 --> 00:26:26,270 Where our ground is pretty much like a sponge. 169 00:26:26,270 --> 00:26:28,130 The water can move through it, 170 00:26:28,140 --> 00:26:32,140 And so simply building a barrier will not keep the water out. 171 00:26:32,140 --> 00:26:35,540 ♪ 172 00:26:35,540 --> 00:26:38,350 Narrator: So, fort lauderdale has a system of pumps 173 00:26:38,350 --> 00:26:42,120 Running 24/7. 174 00:26:42,120 --> 00:26:45,720 The structure right here is one of four storm stations 175 00:26:45,720 --> 00:26:47,950 That we have within the city. 176 00:26:47,960 --> 00:26:51,120 Right now, the storm station is discharging. 177 00:26:51,130 --> 00:26:53,190 This is coming mostly from ground water 178 00:26:53,200 --> 00:26:55,530 'cause you can see it's not raining. 179 00:24:56,210 --> 00:24:58,410 ♪ 180 00:24:16,910 --> 00:24:18,440 Of venetian islands. 181 00:24:18,440 --> 00:24:23,180 With the data that we have now, it is reasonable to predict 182 00:24:23,180 --> 00:24:28,080 An uplift of the city of about 20-25 centimeter. 183 00:24:28,080 --> 00:24:31,050 ♪ 184 00:24:31,050 --> 00:24:33,750 Narrator: Before we could begin the injection process, 185 00:24:33,760 --> 00:24:38,690 We'd need to do some testing. 186 00:24:38,690 --> 00:24:40,960 In order to be sure that the properties 187 00:24:40,960 --> 00:24:43,800 Of the material are the same, 188 00:24:43,800 --> 00:24:47,370 And so the idea is to, let's say, only using few wells 189 00:24:47,370 --> 00:24:50,670 Trying to inject some water there 190 00:24:50,670 --> 00:24:52,040 And see what's happened. 191 00:24:52,040 --> 00:24:56,210 We want to calibrate to validate our model on a pilot test. 192 00:32:10,150 --> 00:32:18,480 ♪ 193 00:24:58,410 --> 00:24:59,850 Narrator: Raising the city 194 00:24:59,850 --> 00:25:00,980 Would cut down on the need 195 00:25:00,980 --> 00:25:03,120 For the m.O.S.E. Floodgate system 196 00:25:03,120 --> 00:25:06,420 And its subsequent sewer problems. 197 00:25:06,420 --> 00:25:09,790 But so far, we only have mathematical models 198 00:25:09,790 --> 00:25:13,060 And limited testing to guide us. 199 00:25:13,060 --> 00:25:17,000 Maybe we can learn from another city closer to home 200 00:25:17,000 --> 00:25:20,700 That's also in danger of being swallowed by the sea. 201 00:25:20,700 --> 00:25:22,270 ♪ 202 00:25:28,980 --> 00:25:35,250 ♪ 203 00:25:35,250 --> 00:25:37,250 Narrator: We're imagining what it would take 204 00:39:37,890 --> 00:39:39,460 And hydrologists, 205 00:39:01,360 --> 00:39:05,160 Is the weight of the materials you use. 206 00:39:05,160 --> 00:39:06,390 Narrator: We may want to hold off 207 00:39:06,390 --> 00:39:10,330 On adding any marble countertops. 208 00:39:10,330 --> 00:39:13,270 We did it -- without having to leave the lagoon 209 00:39:13,270 --> 00:39:16,040 The world has come to love. 210 00:39:16,040 --> 00:39:18,970 We renovated using terrazzo veneziano. 211 00:39:18,970 --> 00:39:21,470 We injected seawater from a dozen underground wells 212 00:39:21,480 --> 00:39:26,350 To lift the outskirts of the city. 213 00:39:26,350 --> 00:39:28,210 We floated the rialto neighborhood 214 00:39:28,220 --> 00:39:32,550 Using buoyant, concrete platforms. 215 00:39:32,550 --> 00:39:34,920 We did it with an international team 216 00:39:34,920 --> 00:39:37,890 Made up of hundreds of italian-heritage architects 217 00:38:59,020 --> 00:39:01,350 And the other thing to be careful of 218 00:39:39,460 --> 00:39:42,860 Hydrogeologists from the american oil industry, 219 00:39:42,860 --> 00:39:45,060 Canadian underwater construction crews, 220 00:39:45,070 --> 00:39:47,970 And dutch "aquatects." 221 00:39:47,970 --> 00:39:50,240 We did it in 20 years. 222 00:39:50,240 --> 00:39:51,940 The final price tag -- 223 00:39:51,940 --> 00:39:55,840 Well, we figure $50 million in labor costs, 224 00:39:55,840 --> 00:39:59,680 $20 million over 10 years for the injection system, 225 00:39:59,680 --> 00:40:01,650 And brace yourself, 226 00:40:01,650 --> 00:40:06,150 $200 billion to float the center of the city. 227 00:40:06,150 --> 00:40:09,490 Yeah, it's gonna take some persuasion in a city 228 00:40:09,490 --> 00:40:13,490 That's already expensive to live in. 229 00:40:13,490 --> 00:40:15,030 We talk about "miami beach rising above," 230 00:38:22,080 --> 00:38:24,080 Teaniti: We have to inject at a small rate. 231 00:37:44,080 --> 00:37:45,880 The venice we love today 232 00:37:45,880 --> 00:37:50,750 And the venice we're dying to protect was built. 233 00:37:50,750 --> 00:37:52,650 While we wait to muster the money 234 00:37:52,650 --> 00:37:56,120 And the political willpower to float of the city, 235 00:37:56,120 --> 00:38:01,160 We'll gradually replenish the aquifer by using injection. 236 00:38:01,160 --> 00:38:05,730 We need expertise from the word the oil companies 237 00:38:05,730 --> 00:38:08,430 Because they have really a lot of experience 238 00:38:08,440 --> 00:38:11,670 In terms of drilling the well. 239 00:38:11,670 --> 00:38:13,340 Narrator: We're thinking 12 wells 240 00:38:13,340 --> 00:38:15,240 In a ring around the city. 241 00:38:15,240 --> 00:38:18,210 The pumping would take 10 years plus another 10 years 242 00:38:18,210 --> 00:38:22,080 For planning and preliminary testing. 243 00:40:15,030 --> 00:40:16,230 It's sort of our motto. 244 00:38:24,090 --> 00:38:26,820 We don't want to inject too much, 245 00:38:26,820 --> 00:38:32,690 Otherwise this will generate some cracks into the formation. 246 00:38:32,690 --> 00:38:34,860 Narrator: As the city slowly rises, 247 00:38:34,860 --> 00:38:37,060 We'll reinforce any gracious homes 248 00:38:37,070 --> 00:38:41,170 And historic buildings that are at risk of cracking. 249 00:38:41,170 --> 00:38:45,940 We'll make sure we use the pride and joy of venetian builders. 250 00:38:45,940 --> 00:38:49,510 It's called terrazzo veneziano. 251 00:38:49,510 --> 00:38:51,840 Da mosto: And that's a special kind of mortar 252 00:38:51,850 --> 00:38:53,610 With stones in it. 253 00:38:53,610 --> 00:38:56,720 You hardly ever see cracks in those kinds 254 00:38:56,720 --> 00:38:59,020 Of typical venetian floors. 255 00:41:48,560 --> 00:41:50,460 Would allow residents to hold on to 256 00:41:16,520 --> 00:41:20,190 To celebrate its new future. 257 00:41:20,190 --> 00:41:23,800 People from all over the world will dance in the squares 258 00:41:23,800 --> 00:41:27,770 And celebrate on the canals in gratitude for a city 259 00:41:27,770 --> 00:41:31,140 That has become a guiding light. 260 00:41:31,140 --> 00:41:33,110 Cities that are threatened by the water 261 00:41:33,110 --> 00:41:35,070 Like miami, new york, 262 00:41:35,080 --> 00:41:38,080 Tokyo, they will start embracing the water, 263 00:41:38,080 --> 00:41:40,150 And we call this rise of the blue city. 264 00:41:40,150 --> 00:41:42,520 They can make cities flexible and adaptable, 265 00:41:42,520 --> 00:41:43,950 Because building for change 266 00:41:43,950 --> 00:41:47,050 Is the only way we can be ready for the future. 267 00:41:47,050 --> 00:41:48,550 Narrator: Our vision for a new venice 268 00:41:13,860 --> 00:41:16,520 It will host the largest carnival ever 269 00:41:50,460 --> 00:41:54,630 What people have long loved about it. 270 00:41:54,630 --> 00:41:57,800 When I walk out of the house, more often than not 271 00:41:57,800 --> 00:42:01,900 I notice something wonderful or beautiful 272 00:42:01,900 --> 00:42:05,940 Or just plain interesting that I've never noticed before, 273 00:42:05,940 --> 00:42:08,440 Even though I've been living in the same house now 274 00:42:08,440 --> 00:42:10,610 For almost 25 years. 275 00:42:10,610 --> 00:42:13,780 ♪ 276 00:42:13,780 --> 00:42:16,280 Narrator: And our hope is that the solutions 277 00:42:16,280 --> 00:42:18,150 To the city's water problems 278 00:42:18,150 --> 00:42:20,020 Will invite people to fall in love 279 00:42:20,020 --> 00:42:24,420 With it all over again -- if we built it today. 280 00:42:24,430 --> 00:42:29,030 ♪ 281 00:40:44,290 --> 00:40:45,690 People were looking for a new space, 282 00:40:16,230 --> 00:40:18,060 But we're doing a lot of community outreach 283 00:40:18,070 --> 00:40:20,870 Because when people understand the threat, 284 00:40:20,870 --> 00:40:22,940 I think they're willing to put up with more burden, 285 00:40:22,940 --> 00:40:26,370 They're willing to pay for it. 286 00:40:26,370 --> 00:40:27,910 Narrator: We trust that if the taxpayers 287 00:40:27,910 --> 00:40:29,940 Of venice lead the way, 288 00:40:29,940 --> 00:40:34,310 Venice-loving patrons around the world will follow. 289 00:40:34,320 --> 00:40:35,710 Since you can't do it with just public money, 290 00:40:35,720 --> 00:40:37,220 There's just not enough of it, 291 00:40:37,220 --> 00:40:38,520 You've got to make sure the private sector 292 00:40:38,520 --> 00:40:42,890 Has confidence so they invest in their infrastructure. 293 00:40:42,890 --> 00:40:44,290 And we see that a hundred years ago, 294 00:37:40,280 --> 00:37:44,080 It's around this area that the most glorious venice, 295 00:40:45,690 --> 00:40:47,690 And they went up in vertical buildings 296 00:40:47,700 --> 00:40:49,160 And making high-rise buildings. 297 00:40:49,160 --> 00:40:50,430 Now today it's the same. 298 00:40:50,430 --> 00:40:52,900 We see water, we see the possibility to see on water, 299 00:40:52,900 --> 00:40:56,440 And with our floating technology we can slowly row into the -- 300 00:40:56,440 --> 00:40:57,900 Into the water. 301 00:40:57,910 --> 00:41:00,640 Narrator: The hope is once a homeowner sees their neighbor 302 00:41:00,640 --> 00:41:03,780 Literally rising above the flood in venice, 303 00:41:03,780 --> 00:41:06,750 They'll latch on to the idea like a life raft, 304 00:41:06,750 --> 00:41:11,780 And eventually the entire city will be transformed. 305 00:41:11,790 --> 00:41:13,850 Once venice has lifted itself up, 306 00:34:17,270 --> 00:34:18,970 But what happens to these families 307 00:33:40,170 --> 00:33:43,800 We have our water pump for waste water, 308 00:33:43,810 --> 00:33:49,440 And we have a vacuum system that takes our waste from the toilet 309 00:33:49,440 --> 00:33:52,850 And transports it to a central facility 310 00:33:52,850 --> 00:33:57,520 That generates bioenergy. 311 00:33:57,520 --> 00:33:58,820 Narrator: These homeowners also have 312 00:33:58,820 --> 00:34:01,720 Their own private energy grid. 313 00:34:01,720 --> 00:34:04,590 So I think, actually, a lot of what you find in this project 314 00:34:04,590 --> 00:34:05,990 Is extremely unique, 315 00:34:05,990 --> 00:34:08,590 And we hope that through all of the efforts 316 00:34:08,600 --> 00:34:10,860 In pioneering these kind of projects 317 00:34:10,870 --> 00:34:15,400 Will be able to be replicated across the world. 318 00:34:15,400 --> 00:34:17,270 Narrator: Seems pretty idyllic, 319 00:33:35,630 --> 00:33:40,170 And most of it during the day is stored inside this battery. 320 00:34:18,970 --> 00:34:22,240 When there's a big storm? 321 00:34:22,240 --> 00:34:24,840 Every houseboat is attached 322 00:34:24,850 --> 00:34:28,250 To two big poles, 323 00:34:28,250 --> 00:34:31,450 Basically, which keep the boat in place until -- 324 00:34:31,450 --> 00:34:36,120 There's a squared anchors around a cylinder bowl, 325 00:34:36,120 --> 00:34:39,130 And that keeps us from floating around, basically. 326 00:34:39,130 --> 00:34:40,660 If there's a very, very big storm -- 327 00:34:40,660 --> 00:34:42,930 I think it's difficult to say, but in general, 328 00:34:42,930 --> 00:34:45,030 They're very stable and they can move up and down. 329 00:34:45,030 --> 00:34:46,900 So if the water level will change, 330 00:34:46,900 --> 00:34:48,470 They'll definitely go up and down 331 00:34:48,470 --> 00:34:50,670 And move with the water. 332 00:32:52,920 --> 00:32:56,420 Floating neighborhood in the world -- 333 00:32:18,490 --> 00:32:21,650 It's a dream come true for a lot of young dutch people. 334 00:32:21,660 --> 00:32:24,460 ♪ 335 00:32:24,460 --> 00:32:25,660 Man: It's really a great opportunity 336 00:32:25,660 --> 00:32:29,160 To actually build my own home. 337 00:32:29,160 --> 00:32:31,600 And living on the water -- yeah, it's really something 338 00:32:31,600 --> 00:32:34,530 We've been looking forward a long time. 339 00:32:34,540 --> 00:32:36,770 Climate is changing, sea levels are rising, 340 00:32:36,770 --> 00:32:41,570 So floating, for me, it's, like, the most logical solution. 341 00:32:41,580 --> 00:32:44,980 I think it's gonna save a lot of nice and great places 342 00:32:44,980 --> 00:32:47,650 If we make it floating now before it's too late. 343 00:32:47,650 --> 00:32:50,750 ♪ 344 00:32:50,750 --> 00:32:52,920 Narrator: Schoonschip is the most sustainable 345 00:34:50,670 --> 00:34:51,940 Narrator: And you don't have to be rich 346 00:32:56,420 --> 00:33:00,760 46 homes designed by 20 architects 347 00:33:00,760 --> 00:33:05,570 Built out of wood and concrete. 348 00:33:05,570 --> 00:33:08,570 The most common way is to make a concrete pontoon, 349 00:33:08,570 --> 00:33:11,570 Like a concrete foundation which floats, 350 00:33:11,570 --> 00:33:16,440 And on top we use a timber frame. 351 00:33:16,440 --> 00:33:19,050 Narrator: Take a look inside, and you'll see these homes 352 00:33:19,050 --> 00:33:24,850 Are sustainable and self-sufficient. 353 00:33:24,850 --> 00:33:26,120 This is your heat pump 354 00:33:26,120 --> 00:33:29,160 Which takes care of the heated tap water 355 00:33:29,160 --> 00:33:31,760 And also the floor heating. 356 00:33:31,760 --> 00:33:35,630 We have solar panels on the roof which generate energy, 357 00:37:09,110 --> 00:37:10,680 As you built a high-rise 358 00:36:28,970 --> 00:36:37,110 ♪ 359 00:36:37,110 --> 00:36:39,380 Instead of floating the whole city, 360 00:36:39,380 --> 00:36:43,480 We'll just float a small part of it, one building at a time. 361 00:36:43,480 --> 00:36:45,180 We'll call on the most experienced 362 00:36:45,190 --> 00:36:47,750 Underwater construction teams in the world 363 00:36:47,760 --> 00:36:51,460 And the best water engineers from the netherlands. 364 00:36:51,460 --> 00:36:55,360 They know all about floating big structures. 365 00:36:55,360 --> 00:36:57,700 Olthius: So we have now our foundations in concrete, 366 00:36:57,700 --> 00:37:00,930 But you also have steel modules which we can connect like lego 367 00:37:00,940 --> 00:37:02,500 To a bigger structures. 368 00:37:02,500 --> 00:37:06,470 If you want to build a floating forest or floating agriculture, 369 00:37:06,470 --> 00:37:09,110 You're not gonna build it on the same foundation 370 00:36:27,470 --> 00:36:28,970 So let's do it! 371 00:37:10,680 --> 00:37:12,880 Or a floating apartment building. 372 00:37:12,880 --> 00:37:16,150 Narrator: Here's the plan -- first we drain the area, 373 00:37:16,150 --> 00:37:18,380 Next we place the floating foundation 374 00:37:18,390 --> 00:37:20,220 In between the stilts. 375 00:37:20,220 --> 00:37:24,220 And lastly, the water has to be pumped back in. 376 00:37:24,230 --> 00:37:25,930 This kind of foundation will start to float, 377 00:37:25,930 --> 00:37:28,060 They will touch underneath the -- 378 00:37:28,060 --> 00:37:31,800 The houses, then we would cut the stilts underneath the water, 379 00:37:31,800 --> 00:37:35,030 And then they'll start to float. 380 00:37:35,040 --> 00:37:37,370 Narrator: We're going to start by floating rialto, 381 00:37:37,370 --> 00:37:40,270 One of the finest neighborhoods in venice. 382 00:35:43,730 --> 00:35:46,190 From becoming the next atlantis. 383 00:34:51,940 --> 00:34:54,040 To own one of these floating homes. 384 00:34:54,040 --> 00:34:57,340 They sell from between $350,000 and $900,000. 385 00:34:57,350 --> 00:35:03,680 ♪ 386 00:35:03,690 --> 00:35:10,560 ♪ 387 00:35:10,560 --> 00:35:14,390 So maybe floatation is the best solution for venice. 388 00:35:14,400 --> 00:35:16,460 We think we could sell residents on the idea 389 00:35:16,460 --> 00:35:20,100 Of floating their homes, but, then again, 390 00:35:20,100 --> 00:35:25,040 There are all of those other buildings in the city. 391 00:35:25,040 --> 00:35:29,680 And there's those millions of poles and all that rain. 392 00:35:29,680 --> 00:35:32,180 ♪ 393 00:35:38,920 --> 00:35:41,350 ♪ 394 00:35:41,360 --> 00:35:43,720 Narrator: We're envisioning how we'd save venice 395 00:21:18,190 --> 00:21:22,330 Then they tried laying planks to keep everyone's feet dry. 396 00:35:46,190 --> 00:35:50,300 So far, we figure we would sink in debt if we tried to rebuild 397 00:35:50,300 --> 00:35:53,770 A city with so much history and culture. 398 00:35:53,770 --> 00:35:57,300 And moving the city even just down the coast 399 00:35:57,310 --> 00:35:59,770 Is a logistical nightmare. 400 00:35:59,770 --> 00:36:02,640 Raising the city won't work if we can't guarantee it 401 00:36:02,640 --> 00:36:08,280 Can be done without toppling its architectural treasures. 402 00:36:08,280 --> 00:36:12,650 Floating the whole city, it would be impossible. 403 00:36:12,650 --> 00:36:17,060 But hold on -- why does it have to be a single solution? 404 00:36:17,060 --> 00:36:20,260 Maybe a package deal is the way to go. 405 00:36:20,260 --> 00:36:23,300 Why don't we try a combination of solutions -- 406 00:36:23,300 --> 00:36:27,470 Floating, injection, and renovation? 407 00:07:04,540 --> 00:07:08,910 And to do that, you need to hold on to something in the sediment, 408 00:06:27,470 --> 00:06:31,570 Due in part to a process called subsidence. 409 00:06:31,570 --> 00:06:35,440 ♪ 410 00:06:35,450 --> 00:06:38,610 Here's how subsidence works. 411 00:06:38,620 --> 00:06:41,980 Water that sits in the spaces between the grains of sediment 412 00:06:41,990 --> 00:06:46,620 Provides enough pressure to hold up the ground above it. 413 00:06:46,620 --> 00:06:48,360 When the ground water is removed 414 00:06:48,360 --> 00:06:50,930 To be used for homes and factories, 415 00:06:50,930 --> 00:06:54,300 The sediment gradually compacts. 416 00:06:54,300 --> 00:06:57,230 That compaction causes the land's surface 417 00:06:57,230 --> 00:07:00,570 To gradually become lower. 418 00:07:00,570 --> 00:07:02,300 Da mosto: Venetian architecture -- 419 00:07:02,310 --> 00:07:04,540 It's anchored under the water. 420 00:06:25,670 --> 00:06:27,470 Over the last 100 years 421 00:07:08,910 --> 00:07:12,980 And that sediment is often prone to sinking. 422 00:07:12,980 --> 00:07:15,580 Subsidence continues to the tune 423 00:07:15,590 --> 00:07:18,190 Of a couple of millimeters a year. 424 00:07:18,190 --> 00:07:20,820 But you add generations to that, 425 00:07:20,820 --> 00:07:24,990 And that subsidence becomes significant. 426 00:07:24,990 --> 00:07:26,860 Narrator: Part of the problem is that the rivers 427 00:07:26,860 --> 00:07:32,070 That used to feed the lagoon were diverted in the 1500s. 428 00:07:32,070 --> 00:07:34,070 Teaniti: Soon after the second world war 429 00:07:34,070 --> 00:07:37,640 When we have the industrial development of the area, 430 00:07:37,640 --> 00:07:41,780 So all the industry is located on the mainland around venice. 431 00:07:41,780 --> 00:07:44,610 They start using ground water. 432 00:07:44,610 --> 00:07:47,320 And that caused further subsidence 433 00:05:45,200 --> 00:05:47,400 Narrator: Some older homes have ground floors 434 00:05:05,820 --> 00:05:09,960 And today it's just trying to keep its head above water. 435 00:05:09,960 --> 00:05:11,890 You had islands made out of sand, 436 00:05:11,900 --> 00:05:14,730 And you had to fortify these islands, 437 00:05:14,730 --> 00:05:18,330 So they put wooden sticks into the islands, 438 00:05:18,340 --> 00:05:22,570 And on these wooden sticks they built all the fundaments 439 00:05:22,570 --> 00:05:26,640 And they build all the houses and everything else. 440 00:05:26,640 --> 00:05:29,480 Once the sticks are under the water 441 00:05:29,480 --> 00:05:33,210 They don't get any oxygen anymore, and so they can't rot. 442 00:05:33,220 --> 00:05:35,180 And that's exactly what happens. 443 00:05:35,190 --> 00:05:38,390 For example, if you dig out these things now they're stone. 444 00:05:38,390 --> 00:05:41,220 They are petrified, basically, 445 00:05:41,220 --> 00:05:45,190 And this is what makes venice so stable. 446 00:07:47,320 --> 00:07:50,080 Of about 12 centimeters -- 447 00:05:47,400 --> 00:05:52,470 That are never used and moats at their doorsteps. 448 00:05:52,470 --> 00:05:55,670 Because when the water comes in, it can wreak havoc. 449 00:05:55,670 --> 00:05:58,510 ♪ 450 00:05:58,510 --> 00:06:01,710 Once the salt water gets into the bricks, 451 00:06:01,710 --> 00:06:06,310 It basically is sucked up on to the walls, 452 00:06:06,320 --> 00:06:09,320 And then the water is evaporating, 453 00:06:09,320 --> 00:06:11,290 And it leaves back the salt, 454 00:06:11,290 --> 00:06:15,520 And the salt is breaking up the bricks. 455 00:06:15,530 --> 00:06:18,390 Narrator: But venice's problems get worse. 456 00:06:18,400 --> 00:06:23,000 While the sea levels are rising the city is also sinking. 457 00:06:23,000 --> 00:06:25,670 It's dropped a total of 22 centimeters 458 00:09:45,340 --> 00:09:48,640 That the italian government is paying to have 459 00:09:13,970 --> 00:09:15,770 It'll be cheaper than do it with the old technology. 460 00:09:15,770 --> 00:09:19,170 So maybe if we were to build a venice today, 461 00:09:19,180 --> 00:09:20,580 We could do a better job, 462 00:09:20,580 --> 00:09:22,780 And it wouldn't suffer the kind of flooding problems 463 00:09:22,780 --> 00:09:27,050 That we see around the city today. 464 00:09:27,050 --> 00:09:29,420 Narrator: Meanwhile, the city is hanging its hopes 465 00:09:29,420 --> 00:09:32,790 On something called the m.O.S.E. Project. 466 00:09:32,790 --> 00:09:35,260 It's a system of underwater movable walls 467 00:09:35,260 --> 00:09:37,830 Designed to block the three inlets from the sea 468 00:09:37,830 --> 00:09:40,830 When high water surges in. 469 00:09:40,830 --> 00:09:43,200 Umgiesser: It's this big project, 470 00:09:43,200 --> 00:09:45,330 6 billion euro, 471 00:09:12,640 --> 00:09:13,970 With the technology of today, 472 00:09:48,640 --> 00:09:50,770 For protection against the high water. 473 00:09:50,770 --> 00:09:53,540 So the mobile barrier project has never been envisioned 474 00:09:53,540 --> 00:09:56,310 As a permanent solution. 475 00:09:56,310 --> 00:09:58,280 Teaniti: The working life for the m.O.S.E. Project 476 00:09:58,280 --> 00:10:00,450 Is around 50 years. 477 00:10:00,450 --> 00:10:02,520 And then who knows? 478 00:10:02,520 --> 00:10:03,650 We don't know. 479 00:10:03,650 --> 00:10:05,390 If we have a sea level rise, 480 00:10:05,390 --> 00:10:08,190 We have to close the barriers more and more often, 481 00:10:08,190 --> 00:10:10,990 And at a certain point you come at a situation 482 00:10:10,990 --> 00:10:14,000 Where you have to close them too often. 483 00:10:14,000 --> 00:10:15,930 Narrator: And when the barrier closes, 484 00:08:31,590 --> 00:08:34,660 To celebrate and have wonderful dances, 485 00:07:50,090 --> 00:07:52,850 This much. 486 00:07:52,860 --> 00:07:54,590 That's a lot for a city 487 00:07:54,590 --> 00:07:58,430 That all its buildings are at water level. 488 00:07:58,430 --> 00:08:01,760 Narrator: By the 1970s, there was so much concern 489 00:08:01,760 --> 00:08:05,300 The city shut down the ground water wells. 490 00:08:05,300 --> 00:08:09,670 But that won't be enough to save venice. 491 00:08:09,670 --> 00:08:12,510 Venice is still subsiding at the rate of, 492 00:08:12,510 --> 00:08:15,340 Let's say, one millimeter per year. 493 00:08:15,350 --> 00:08:18,010 Narrator: If venice continues sinking at this rate, 494 00:08:18,010 --> 00:08:22,480 We'll soon risk losing a city adored for its art, music, 495 00:08:22,490 --> 00:08:26,120 And it's famous masked carnival. 496 00:08:26,120 --> 00:08:31,590 Venice is known as a place where one can wear a mask 497 00:05:03,920 --> 00:05:05,820 It's a city on stilts, 498 00:08:34,660 --> 00:08:39,270 And there are wonderful parades here. 499 00:08:39,270 --> 00:08:41,870 Narrator: No one wants to rain on venice's parade. 500 00:08:41,870 --> 00:08:46,170 So if they built an empire out of a swamp centuries ago, 501 00:08:46,180 --> 00:08:49,940 Then we could build a new one today, right? 502 00:08:49,950 --> 00:08:51,710 ♪ 503 00:08:51,710 --> 00:08:55,980 You can't think of this venice without the lagoon 504 00:08:55,990 --> 00:08:59,390 And the salt marsh and the wetlands all around it. 505 00:08:59,390 --> 00:09:04,790 They're too inseparable elements of a single system. 506 00:09:04,790 --> 00:09:08,130 Narrator: But many experts think rebuilding in a new location 507 00:09:08,130 --> 00:09:09,960 Is a great idea. 508 00:09:09,970 --> 00:09:12,630 I think even that if you had to rebuild venice 509 00:01:58,170 --> 00:02:01,240 -- Captions by vitac -- www.Vitac.Com 510 00:01:22,330 --> 00:01:23,970 I don't think it's so hard. 511 00:01:23,970 --> 00:01:26,530 Narrator: And do we attempt to improve upon the current city 512 00:01:26,540 --> 00:01:29,240 Or stay true to the classical design? 513 00:01:29,240 --> 00:01:33,070 I don't think it's a realistic option to move the city. 514 00:01:33,080 --> 00:01:35,880 I think it would just fall apart. 515 00:01:35,880 --> 00:01:38,210 Narrator: Get ready for a deep dive 516 00:01:38,220 --> 00:01:41,950 Below earth's most famous water world. 517 00:01:41,950 --> 00:01:45,890 We're on the job site of one of the world's greatest wonders, 518 00:01:45,890 --> 00:01:49,620 And we're wondering how long would it take? 519 00:01:49,630 --> 00:01:51,590 How much would it cost? 520 00:01:51,600 --> 00:01:53,860 How many workers would we need? 521 00:01:53,860 --> 00:01:58,170 Could we even do it if we built it today? 522 00:01:19,300 --> 00:01:22,330 If you had to rebuild venice again with this technology, 523 00:02:01,240 --> 00:02:04,210 Captions paid for by discovery communications 524 00:02:04,210 --> 00:02:06,470 ♪ 525 00:02:06,480 --> 00:02:09,910 In the middle of a tidal lagoon along the coast of Italy 526 00:02:09,910 --> 00:02:14,620 Lies one of the world's most magical tourist destinations. 527 00:02:14,620 --> 00:02:18,950 Venice is crisscrossed by canals that lead to its signature 528 00:02:18,960 --> 00:02:20,990 S-shaped waterway. 529 00:02:20,990 --> 00:02:23,420 But today's highway for honeymooners 530 00:02:23,430 --> 00:02:27,200 Used to be the perfect hideout. 531 00:02:27,200 --> 00:02:28,460 When this was an island 532 00:02:28,470 --> 00:02:30,470 Venice could not be conquered from the mainland. 533 00:02:30,470 --> 00:02:32,930 It could not be conquered from the seaside 534 00:02:32,940 --> 00:02:35,800 Because it was inside the lagoon. 535 00:00:42,160 --> 00:00:43,990 That we've got some high sea levels, 536 00:00:08,590 --> 00:00:11,230 Narrator: Venice, the city of romance -- 537 00:00:11,230 --> 00:00:16,060 Gives the impression of being a magical, floating city. 538 00:00:16,070 --> 00:00:17,400 It's beautiful, 539 00:00:17,400 --> 00:00:20,070 But it's sinking under the weight of its own history, 540 00:00:20,070 --> 00:00:23,570 A sea of tourists, and weather. 541 00:00:23,570 --> 00:00:28,710 I'm really worried that venice is on the edge of a precipice. 542 00:00:28,710 --> 00:00:30,210 Narrator: Desperate attempts are being made 543 00:00:30,210 --> 00:00:32,150 To hold back the storms, 544 00:00:32,150 --> 00:00:35,980 Tides, and rising sea. 545 00:00:35,990 --> 00:00:37,320 Part of global warming, 546 00:00:37,320 --> 00:00:40,390 Climate change is stronger storms, bigger surges, 547 00:00:40,390 --> 00:00:42,160 And if, god forbid, they hit at the same time 548 00:02:35,810 --> 00:02:37,870 Only the people who lived here 549 00:00:43,990 --> 00:00:46,690 The damage would be significant. 550 00:00:46,700 --> 00:00:50,100 Narrator: The floating city doesn't actually float. 551 00:00:50,100 --> 00:00:54,570 It's built on wooden pilings set in 118 submerged islands 552 00:00:54,570 --> 00:00:57,470 In the northern end of the adriatic sea. 553 00:00:57,470 --> 00:00:58,970 Hundreds of pedestrian bridges 554 00:00:58,980 --> 00:01:02,380 And canals keep the city connected. 555 00:01:02,380 --> 00:01:05,950 It's the only historic city built right 556 00:01:05,950 --> 00:01:10,690 In the middle of a marshy lagoon. 557 00:01:10,690 --> 00:01:12,950 Narrator: Can we use modern engineering solutions 558 00:01:12,960 --> 00:01:14,720 To save hundreds of years of history 559 00:01:14,720 --> 00:01:19,290 From sinking below the surface? 560 00:04:22,210 --> 00:04:25,080 Narrator: This area gets hit by some very high tides, 561 00:03:48,350 --> 00:03:50,250 You have two choices -- 562 00:03:50,250 --> 00:03:54,680 Either walk or travel on the water. 563 00:03:54,680 --> 00:03:57,390 55,000 people live here. 564 00:03:57,390 --> 00:04:01,420 There used to be almost four times that number. 565 00:04:01,420 --> 00:04:03,060 People cannot afford living here anymore 566 00:04:03,060 --> 00:04:05,960 Because it's so expensive now. 567 00:04:05,960 --> 00:04:09,630 Narrator: But that doesn't stop an estimated 30 million tourists 568 00:04:09,630 --> 00:04:13,070 From pouring off of water buses every year. 569 00:04:13,070 --> 00:04:14,770 I've been there when st. Mark's square's flooded, 570 00:04:14,770 --> 00:04:16,340 And people sit and drink their coffee 571 00:04:16,340 --> 00:04:19,110 With six inches of water up their -- up their ankle. 572 00:04:19,110 --> 00:04:22,210 ♪ 573 00:03:44,070 --> 00:03:48,340 Narrator: There are no cars here because there are no roads. 574 00:04:25,080 --> 00:04:30,020 A phenomenon called acqua alta. 575 00:04:30,020 --> 00:04:33,420 When this was built and started 500 years ago, 576 00:04:33,420 --> 00:04:35,560 The water was not as extreme. 577 00:04:35,560 --> 00:04:38,430 In 1966, 578 00:04:38,430 --> 00:04:44,300 Venice was devastated by a huge flood. 579 00:04:44,300 --> 00:04:47,870 The whole city was covered in water. 580 00:04:47,870 --> 00:04:50,470 Starting from that event, 581 00:04:50,470 --> 00:04:53,170 All the world started thinking 582 00:04:53,180 --> 00:04:56,480 About how we can help venice to survive. 583 00:04:56,480 --> 00:04:59,910 ♪ 584 00:04:59,920 --> 00:05:03,920 Narrator: The truth is, venice isn't exactly a floating city. 585 00:03:07,200 --> 00:03:08,740 So they would have made 586 00:02:37,870 --> 00:02:41,280 Knew the roots through to where the city was. 587 00:02:41,280 --> 00:02:42,510 Umgiesser: If you came from the seaside, 588 00:02:42,510 --> 00:02:44,150 You had ships which were too big. 589 00:02:44,150 --> 00:02:45,650 They couldn't go through the lagoon. 590 00:02:45,650 --> 00:02:47,450 If you came from the land, 591 00:02:47,450 --> 00:02:51,620 You wouldn't have ships in order to get to venice. 592 00:02:51,620 --> 00:02:54,560 Narrator: Before long, venice's complicated geography 593 00:02:54,560 --> 00:02:56,660 Became its identity. 594 00:02:56,660 --> 00:02:58,660 Well, you see a campo, 595 00:02:58,660 --> 00:03:01,230 Which is what we call the squares, 596 00:03:01,230 --> 00:03:05,170 That would have originally been probably a tidal pool 597 00:03:05,170 --> 00:03:07,200 With the highest sediment around it. 598 00:10:15,930 --> 00:10:19,570 All the sewage that usually gets swept out to sea is trapped. 599 00:03:08,740 --> 00:03:11,570 The houses around this tidal pool. 600 00:03:11,580 --> 00:03:15,840 Umgiesser: Squares were used in order to form small communities. 601 00:03:15,850 --> 00:03:18,150 Close to a square normally, there's also a church. 602 00:03:18,150 --> 00:03:22,380 ♪ 603 00:03:22,390 --> 00:03:24,490 The church was the glue 604 00:03:24,490 --> 00:03:28,390 That people used in order to come together. 605 00:03:28,390 --> 00:03:31,230 Narrator: From the water, venice may look like an island, 606 00:03:31,230 --> 00:03:34,630 But it's actually a collection of small islands. 607 00:03:34,630 --> 00:03:37,430 The city of venice is built on a lot of islands, 608 00:03:37,430 --> 00:03:39,600 I think more than 100 islands 609 00:03:39,600 --> 00:03:44,070 That basically have been glued together by the bridges. 610 00:17:53,390 --> 00:17:56,220 Everywhere you see that's built in venice 611 00:16:59,470 --> 00:17:05,140 And it even has its own system of canals. 612 00:17:05,140 --> 00:17:11,080 So moving there should keep tourism up and costs down. 613 00:17:11,080 --> 00:17:15,280 But the city of venice doesn't sit on solid ground -- 614 00:17:15,280 --> 00:17:17,380 It sits on stilts. 615 00:17:17,390 --> 00:17:23,420 ♪ 616 00:17:23,430 --> 00:17:27,960 And it's been sitting on them for a very long time. 617 00:17:27,960 --> 00:17:34,870 ♪ 618 00:17:34,870 --> 00:17:38,170 Since it was founded in the year 421, 619 00:17:38,170 --> 00:17:42,580 The city has been resting on water-resistant alder trunks. 620 00:17:42,580 --> 00:17:46,280 The landmark church of santa maria della salute alone 621 00:17:46,280 --> 00:17:49,350 Is perched on more than a million stilts. 622 00:17:49,350 --> 00:17:53,390 ♪ 623 00:16:56,330 --> 00:16:59,470 Called chioggia, 624 00:17:56,230 --> 00:17:58,260 Is on top of hundreds and hundreds 625 00:17:58,260 --> 00:18:00,330 Of these wooden piles 626 00:18:00,330 --> 00:18:03,460 That get driven through the mud layers. 627 00:18:03,470 --> 00:18:07,230 On top of the wooden piles they put some flat, 628 00:18:07,240 --> 00:18:11,070 Wooden boards to level it all off. 629 00:18:11,070 --> 00:18:13,240 Then on top of the wooden boards, 630 00:18:13,240 --> 00:18:16,280 They'd make the foundation stones. 631 00:18:16,280 --> 00:18:20,180 It's basically a kind of white marble to deal 632 00:18:20,180 --> 00:18:24,890 With the interface between water and air. 633 00:18:24,890 --> 00:18:27,250 Then on top of this stone base, 634 00:18:27,260 --> 00:18:31,390 The walls of most buildings are made out of bricks, 635 00:18:31,390 --> 00:18:34,500 Which are much lighter because they knew then 636 00:16:14,120 --> 00:16:16,860 21 of the town's heritage buildings, 637 00:15:25,210 --> 00:15:32,550 ♪ 638 00:15:32,550 --> 00:15:35,680 That's what they're doing here in kiruna, sweden. 639 00:15:35,690 --> 00:15:42,120 ♪ 640 00:15:42,120 --> 00:15:47,490 ♪ 641 00:15:47,500 --> 00:15:50,970 The largest and northern most town in the country 642 00:15:50,970 --> 00:15:54,200 Is being swallowed up by a huge iron ore mine 643 00:15:54,200 --> 00:15:56,400 That is causing sinkholes. 644 00:15:56,410 --> 00:16:00,570 ♪ 645 00:16:00,580 --> 00:16:04,810 So, kiruna is being relocated two miles east. 646 00:16:04,810 --> 00:16:07,180 ♪ 647 00:16:07,180 --> 00:16:11,090 This is one of the biggest urban transformations on the planet. 648 00:16:11,090 --> 00:16:14,120 ♪ 649 00:18:34,500 --> 00:18:37,700 To be careful about creating too much weight 650 00:16:16,860 --> 00:16:18,890 Including a landmark church, 651 00:16:18,890 --> 00:16:22,100 Are being transferred by truck and crane. 652 00:16:22,100 --> 00:16:30,240 ♪ 653 00:16:30,240 --> 00:16:33,640 Other buildings are being dismantled brick by brick 654 00:16:33,640 --> 00:16:37,310 And reassembled on the new site. 655 00:16:37,310 --> 00:16:40,510 In addition, nearly 3,000 new homes 656 00:16:40,520 --> 00:16:44,850 Are being built for residence. 657 00:16:44,850 --> 00:16:47,050 Maybe we could do like the swedes 658 00:16:47,060 --> 00:16:50,790 And relocate all of venice to a more stable location. 659 00:16:50,790 --> 00:16:53,290 ♪ 660 00:16:53,300 --> 00:16:56,330 There is a town just 33 miles away 661 00:20:38,350 --> 00:20:40,150 It's going to cost a billion dollars 662 00:19:50,740 --> 00:19:54,610 So venice needs the lagoon in order to remain venice. 663 00:19:54,610 --> 00:19:57,950 So I think this option cannot be. 664 00:19:57,950 --> 00:20:01,180 It's not possible at all. 665 00:20:01,180 --> 00:20:05,990 I think what makes venice unique and really special 666 00:20:05,990 --> 00:20:10,690 Is the accumulation of 1,000 years of history, 667 00:20:10,690 --> 00:20:14,290 And you can't buy that, and you can't make that. 668 00:20:14,300 --> 00:20:18,970 And the fact that it has this 1,000 years to demonstrate 669 00:20:18,970 --> 00:20:21,940 And we're living in the fruits of that 670 00:20:21,940 --> 00:20:27,540 Is the incredible resilience of the human, physical, 671 00:20:27,540 --> 00:20:32,650 And artistic elements that come together in what is venice. 672 00:20:32,650 --> 00:20:35,250 Narrator: Even if we could maintain the city's character, 673 00:20:35,250 --> 00:20:38,350 Could we afford it? 674 00:19:49,440 --> 00:19:50,740 It's no more venice. 675 00:20:40,160 --> 00:20:42,220 Just to move the city of kiruna, sweden, 676 00:20:42,220 --> 00:20:44,660 To save it from sinkholes. 677 00:20:44,660 --> 00:20:46,860 This is becoming cost-prohibitive. 678 00:20:46,860 --> 00:20:50,360 ♪ 679 00:20:50,370 --> 00:20:54,530 Could we lift the city instead? 680 00:20:54,540 --> 00:20:58,770 It's been done in chicago where three million people live 681 00:20:58,770 --> 00:21:01,070 Just a few feet above lake michigan. 682 00:21:01,080 --> 00:21:07,210 ♪ 683 00:21:07,220 --> 00:21:10,580 Flooding was a problem for decades. 684 00:21:10,590 --> 00:21:13,590 Engineers tried sloping the streets so rainwater 685 00:21:13,590 --> 00:21:16,620 Ran into the chicago river. 686 00:21:16,630 --> 00:21:18,190 That didn't work. 687 00:19:19,910 --> 00:19:21,580 Standish: The city's made of islands 688 00:18:37,700 --> 00:18:41,370 That would just increase the subsidence. 689 00:18:41,370 --> 00:18:45,770 Most of the time it's two thin walls of brick with air 690 00:18:45,770 --> 00:18:47,370 In the middle. 691 00:18:47,380 --> 00:18:48,680 Narrator: On second thought, 692 00:18:48,680 --> 00:18:51,040 Venice's complicated underwater support system 693 00:18:51,050 --> 00:18:53,710 Maybe too challenging for us to relocate. 694 00:18:53,720 --> 00:18:59,520 Is there another way to keep this one-of-a-kind city afloat? 695 00:19:07,360 --> 00:19:09,360 Narrator: Venice is slowly sinking 696 00:19:09,370 --> 00:19:11,900 Deeper underwater each year. 697 00:19:11,900 --> 00:19:14,100 We want to save the historic city, 698 00:19:14,100 --> 00:19:16,870 But the plan to relocate its complex underwater support 699 00:19:16,870 --> 00:19:19,910 System elsewhere isn't possible. 700 00:15:23,270 --> 00:15:25,210 And just move it? 701 00:19:21,580 --> 00:19:23,410 That are connected by bridges. 702 00:19:23,410 --> 00:19:24,810 And if you think about it as well, 703 00:19:24,810 --> 00:19:27,150 There are other connections under the water 704 00:19:27,150 --> 00:19:28,380 To do with utilities, 705 00:19:28,380 --> 00:19:32,490 Electricity, water systems, there are wells. 706 00:19:32,490 --> 00:19:36,520 To me, it is just impossible to move the city. 707 00:19:36,530 --> 00:19:38,730 ♪ 708 00:19:38,730 --> 00:19:40,860 Narrator: Plus would moving our city mean 709 00:19:40,860 --> 00:19:45,270 We would lose what makes venice venice? 710 00:19:45,270 --> 00:19:46,800 Teaniti: (speaks indistinctly) ...Probably can be done. 711 00:19:46,800 --> 00:19:49,440 If you move venice to outside this lagoon, 712 00:12:14,080 --> 00:12:15,520 Do we move it? 713 00:11:38,110 --> 00:11:39,550 They cannot buy anything, 714 00:11:39,550 --> 00:11:43,650 They cannot consume anything, so that is -- 715 00:11:43,650 --> 00:11:46,450 It's a big problem for the tourism. 716 00:11:46,460 --> 00:11:48,460 Narrator: Our mission is to protect venice, 717 00:11:48,460 --> 00:11:50,260 Whatever it takes. 718 00:11:50,260 --> 00:11:52,860 And there's a chance that what we do in venice 719 00:11:52,860 --> 00:11:56,730 Could help save other cities like new york, 720 00:11:56,730 --> 00:12:01,500 Miami, even london, from sinking below water. 721 00:12:01,500 --> 00:12:04,340 And that mission will guide every decision 722 00:12:04,340 --> 00:12:07,980 We make on our modern-day venetian renovation. 723 00:12:07,980 --> 00:12:12,250 ♪ 724 00:12:12,250 --> 00:12:14,080 Do we rebuild it? 725 00:11:36,680 --> 00:11:38,110 And if tourists cannot walk around, 726 00:12:15,520 --> 00:12:19,350 Do we float it or just raise it up? 727 00:12:19,360 --> 00:12:21,490 How long is it going to take? 728 00:12:21,490 --> 00:12:23,520 How many people will it take? 729 00:12:23,530 --> 00:12:29,160 And how much will the whole thing cost? 730 00:12:29,170 --> 00:12:31,800 Let's look at our first option. 731 00:12:31,800 --> 00:12:33,870 Why don't we rebuild venice? 732 00:12:33,870 --> 00:12:38,310 Smaller versions of it have been popping up all over the world. 733 00:12:38,310 --> 00:12:40,570 Standish: Las vegas has a venetian hotel 734 00:12:40,580 --> 00:12:42,940 With gondola rides, 735 00:12:42,950 --> 00:12:44,910 And many places in the world are sometimes called 736 00:12:44,910 --> 00:12:46,580 "the new venice." 737 00:12:46,580 --> 00:12:49,880 There's even a small area of canals in london 738 00:10:57,070 --> 00:11:02,380 And culture with it. 739 00:10:19,570 --> 00:10:21,700 ♪ 740 00:10:21,700 --> 00:10:23,270 Umgiesser: If you block the tidal action, 741 00:10:23,270 --> 00:10:25,140 The sewage stays inside the lagoon, 742 00:10:25,140 --> 00:10:28,640 And then it's unbearable. 743 00:10:28,650 --> 00:10:30,040 Narrator: We need to move quickly 744 00:10:30,050 --> 00:10:34,050 And develop a plan that will keep venice above water 745 00:10:34,050 --> 00:10:36,580 And even rescue other sinking cities 746 00:10:36,590 --> 00:10:38,620 Around the world, too. 747 00:10:38,620 --> 00:10:41,060 ♪ 748 00:10:49,100 --> 00:10:51,600 Narrator: We're imagining how we could save venice 749 00:10:51,600 --> 00:10:54,100 From disappearing underwater, 750 00:10:54,100 --> 00:10:57,070 Taking centuries of irreplaceable history 751 00:12:49,890 --> 00:12:51,450 Known as "little venice." 752 00:11:02,380 --> 00:11:06,250 Venice has been attracting visitors from other places, 753 00:11:06,250 --> 00:11:09,880 Going back to the 13th, 14th century -- 754 00:11:09,890 --> 00:11:14,020 Pilgrims, traders, merchants, 755 00:11:14,020 --> 00:11:15,890 Many different kinds of people. 756 00:11:15,890 --> 00:11:18,890 Venice is an extreme concentration 757 00:11:18,900 --> 00:11:23,700 Of heritage and beauty. 758 00:11:23,700 --> 00:11:25,930 Narrator: There's also a lot of money here. 759 00:11:25,940 --> 00:11:28,240 But huge retail and hotel profits 760 00:11:28,240 --> 00:11:32,910 Are in danger of getting washed away in the rising water. 761 00:11:32,910 --> 00:11:34,180 If it's coming too often, 762 00:11:34,180 --> 00:11:36,680 What happens is tourists cannot walk around anymore, 763 00:14:40,460 --> 00:14:44,770 With our inhabitants, with the smell of the sea water. 764 00:14:03,330 --> 00:14:06,630 Venice because the geography is so similar. 765 00:14:06,630 --> 00:14:09,660 ♪ 766 00:14:09,670 --> 00:14:12,830 So, could we build our own copy of venice 767 00:14:12,840 --> 00:14:16,740 And in a location less soggy than its present one? 768 00:14:16,740 --> 00:14:18,140 Even if we could build it, 769 00:14:18,140 --> 00:14:23,710 Could we ever duplicate its unique charm? 770 00:14:23,710 --> 00:14:27,250 There isn't one formula for recreating venice. 771 00:14:27,250 --> 00:14:29,620 It's much more of an idea. 772 00:14:29,620 --> 00:14:31,750 It's a feeling, it's a construction, 773 00:14:31,750 --> 00:14:36,790 Both literally in cement but also in our minds. 774 00:14:36,790 --> 00:14:38,060 Teaniti: More or less as before, 775 00:14:38,060 --> 00:14:40,460 The city must be there with our people, 776 00:14:00,320 --> 00:14:03,320 Named xitang even looks like 777 00:14:44,770 --> 00:14:47,800 Otherwise it could be another cities. 778 00:14:47,800 --> 00:14:51,510 My idea is that venice had the perfect position. 779 00:14:51,510 --> 00:14:54,340 It was inside a lagoon where you didn't have to worry 780 00:14:54,340 --> 00:14:57,340 About the problem of sewage. 781 00:14:57,350 --> 00:15:02,380 Sewage was naturally taken away because we had tides. 782 00:15:02,390 --> 00:15:04,920 Narrator: Even if we were satisfied with building a city 783 00:15:04,920 --> 00:15:09,790 That merely captures the essence of venice, can we afford it? 784 00:15:09,790 --> 00:15:15,060 The replica in dalian cost more than $8 billion. 785 00:15:15,060 --> 00:15:17,460 ♪ 786 00:15:17,470 --> 00:15:19,800 Rather than starting from the ground up, 787 00:15:19,800 --> 00:15:23,270 Why don't we try to save of the city's renowned architecture 788 00:13:23,220 --> 00:13:26,150 These western architectural styles can act 789 00:12:51,450 --> 00:12:54,320 So in some ways you don't even really need to go 790 00:12:54,320 --> 00:12:56,590 And build another venice somewhere else, 791 00:12:56,590 --> 00:12:57,730 Because it's already been done 792 00:12:57,730 --> 00:13:01,160 In lots of places around the world. 793 00:13:01,160 --> 00:13:04,300 Narrator: In 1999, the venetian resort hotel 794 00:13:04,300 --> 00:13:06,530 Opened on the vegas strip. 795 00:13:06,540 --> 00:13:09,770 It cost $1.5 billion. 796 00:13:09,770 --> 00:13:12,070 But that's nothing compared 797 00:13:12,070 --> 00:13:15,410 To what's being created in china. 798 00:13:15,410 --> 00:13:16,810 China has been in the midst 799 00:13:16,810 --> 00:13:20,110 Of a massive movement in duplitecture. 800 00:13:20,120 --> 00:13:23,220 An eiffel tower, a baroque flourish -- 801 00:00:01,320 --> 00:00:08,590 ♪ 802 00:13:26,160 --> 00:13:28,760 In some ways like a chanel logo on a purse. 803 00:13:28,760 --> 00:13:30,890 Narrator: China's closest copy of venice 804 00:13:30,890 --> 00:13:33,730 Is in the northern sea port of dalian, 805 00:13:33,730 --> 00:13:36,230 Part of a neighborhood that has reproductions 806 00:13:36,230 --> 00:13:38,930 Of all kinds of european buildings. 807 00:13:38,940 --> 00:13:43,470 It will even include over two miles of canals with gondoliers. 808 00:13:43,470 --> 00:13:48,840 It's a monument to how big china is now on the world's stage. 809 00:13:48,850 --> 00:13:52,980 It's a way of showing, "we're so powerful, we can do it, too," 810 00:13:52,980 --> 00:13:54,420 Perhaps even faster 811 00:13:54,420 --> 00:13:58,890 And sometimes actually bigger than the original. 812 00:13:58,890 --> 00:14:00,320 Narrator: Another small town in china 63073

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