Bionic Tower
The Bionic Tower was a visionary vertical city, a very large building designed for human home by Spanish architects Eloy Celaya, María Rosa Cervera and Javier Gómez. It would have a main tower  high, with 300 stories housing about 100,000 people. The point of the Bionic Tower is to use bionics to solve the world's rising population problems in an eco-friendly way, a very incredibly hard feat to complete.