Floating apartment blocks: discuss. This is the Citadel, the residential part of the New Water complex that is being built in the Netherlands, a country where much of its land is below sea level. Designed by Dutchman Koen Olthuis of Waterstudio it will consist of a floating concrete caisson with apartment blocks above and is a quarter greener than most houses, as it will use its watery site to keep the cribs cool.

The complex will be set in a polder, a kind of below-sea level reservoir that is used as an overflow for flood waters, but is normally pumped dry. The polder will be filled with water and the New Water foundations floated on top of it.

There will be approximately 60 flats in the block and, as well as dock space for your boat, there are plans for garages as well. These are not to house amphibious cars, but regular ones, that you drive from the mainland back to your pad via a floating road, of course.
Inhabitat Via The Guardian