Marina Bay Sands

This is one of the world's most visually striking hotels, inside and out. The complex comprises three separate 57-story skyscrapers (see photo) containing over 2500 hotel rooms, a sizable casino, a huge convention center, two floors of upscale retail stores, and more.

The three skyscrapers are connected at the top by a surfboard-resembling structure featuring a bar, tree park, observation platform, and an exceptionally long infinity swimming pool.