Care to swim in a transparent pool suspended 115 feet up in the air over London? Well, the Sky Pool gives you that opportunity. The floating acrylic pool is suspended between two 10 story skyscrapers. If you want the thrill of swimming up that high while seeing the street below, you'll need to pony up about a million and a half for an apartment at Embassy Gardens. The pool is only open to residents and their guests. I think I'll pass. (photo: Getty Images)