NO THANK YOU! You can go but I'll stay on the ground. Plans are underway for the world's first rooftop 360-degree infinity pool in London. Compass Pools, a UK-based pool manufacturer,unveiledits design for Infinity London, a 600,000-liter pool that would top a 55-story hotel. Contractors and partners have yet to be confirmed, but construction could begin as early as 2020. The pool's walls and floor are completely transparent, meaning you get a full view of the hotel below and the London skyline.