There are very few urban design solutions that address housing the inevitable tide of displaced people that could arise as oceans swell under global warming. Certainly none are as spectacular as this one. The Lilypad, by Vincent Callebaut, is a concept for a completely self-sufficient floating city intended to provide shelter for future climate change refugees. The intent of the concept itself is laudable, but it is Callebaut’s phenomenal design that has captured our imagination.