There are thousands of abandoned oil rigs in the Earth’s waters, and Ku Yee Kee and Hor Sue-Wern have proposed that we revitalize these structures and transform them into sustainable housing. A photovoltaic membrane on the roof of the rigs will harvest solar energy, and wind and tidal energy will supplement the solar power. The unique structure utilizes all parts of the rig, allowing people to live both above and below the ocean. The designers plan for the general population to live on the rig itself while marine biologists and other scientists reside and work in underwater labs below.