The Dasparkhotel in Germany doesn't have rooms, per se. Instead, it has repurposed sewer pipes that are outfitted with a bed for your sleeping comfort.

Everybody likes the taste of organic, farm-fresh food, but in dense urban areas, large-scale agriculture isn't really an option. A Dutch design firm has come up with a concept for a rooftop greenhouse ecosystem that produces food so efficiently that installing them on top of buildings in NYC could feed the majority of people living there.

Adrian Smith + Gordon Gill Architecture's Wuhan Greenland Center might not reach as high into the sky like the Kingdom Tower or the Burj Khalifa, but when it's completed, it will be the world's fourth tallest building, third-tallest in China and ultra sustainable. At 1,988 feet hight with 119 floors, the Wuhan Greenland Center's "tapered body, softly rounded corners and domed top" don't just make the entire structure look slim and sleek, special vents at the edges of its tripod-like "legs" help "reduce wind resistance and vortex action" that usually causes a building to sway.

Apple is growing, and fast. They've far outgrown their original campus in Cupertino, and have plans to build a gigantic new base of operations that'll fit over 12,000 people in one building.