Turning a Hill into a Hidden Paradise! We took on the ultimate challenge—digging into a hill to create a stunning underground swimming pool with a beautiful natural waterfall! Using only primitive ...

Don't mistake this for a pool, either. This home in Westlake Village, California has a "tropical lagoon" — complete with cascading waterfall. It's listed at $14.9 million. Check out more photos ...

This death-defying pool at the edge of a giant waterfall isn't called the Devil's Pool for nothing. Located at Victoria Falls in Zambia, the natural infinity pool overlooks a 338-foot drop.