The world's biggest swimming pool is the size of 16 football fields and looks like a giant lagoon

There are Olympic-sized swimming pools, and then there's the pool at San Alfonso del Mar, a resort outside of Santiago, Chile.

The pool is officially the world's largest, and reports say it cost as much as $2 billion to build.

It opened to the public in 2006, although it's only accessible to hotel guests. No matter how you look at it, this pool is a total beast.