Cairo's 'Space-Scraper' is an eco-friendly building that combines three spiraling towers interlocking with one another. Tower one is strictly office, the other two towers serve the purpose of a hotel and a residential place. How is this building eco-friendly? Well, it is powered by the sun, wind and the power of the Nile River.
Designed by Mohamed Abdel-Aziz, this futuristic building has yet to be built. If it is built, however, the Space-Scraper in Cairo will overlook the pyramids and the Nile River.