The Architect of Aquatecture
"...what attracts me the most about floating architecture is the enormous flexibility water offers us, and the virtually unexplored limitless possibilities water brings to metropolises worldwide. Planning for urban change using water will help us cope with the yet unforeseen effects of climate change and urbanization."
Olthuis says that building on water also has many environmental advantages, such as natural cooling.
Lots of fascinating images over at Inhabitat.