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The Lilypad is a self-sustaining city that can travel the world’s oceans and rescue refugees from disasters and rising sea levels. They are powered thermal, tidal, solar and wind energy and house up to a half-million people each.
fantastic future sea city
"SESU Seastead" by Marko Jarvela, imagines "a mini-society of ecologically conscious enthusiasts" living "with the minimum input from the outside civilization and the minimum ecological footprint."
Russian floating cities of the sky
visionary floating architecture
Revolving door generates energy from people coming and going