There's a man-made whirlpool in Singapore that is bound to suck in your attention. The two-level design features a vortex on the top, and a waterfall on the bottom. This huge bowl-like structure is located in Marina Bay Sands, the world's...

There's a man-made whirlpool in Singapore that is bound to suck in your attention. The two-level design features a vortex on the top, and a waterfall on the bottom. This huge...