11 Future World Eco-Cities > Example 1
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 1 / 11 - 9,106 views | Indoor City 2 (GALLERY)Ben Preiss - At 1500ft (450m) high, the Crystal Island project won’t be the tallest piece of architecture on the planet, but covering 27 million sq ft (2.5 million sq. m) of floor space, it will be gimungeous. Basically,…   
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