Heaven & Earth Flying Cities
The Heaven and Earth city concept tackles the increasing human population needs in terms of our pretty small planet. Wei Zhao designed the donut-shaped cities to accommodate not only humans but also forests with animals, mountains, and rivers while floating in the air with the help of Maglev Technology. Basically this creation is a huge magnetic aircraft. The Heaven and Earth would at the same time generate power for the city.
Via: TrendHunter.com