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 ...

La Fortuna is Costa Rica's most iconic waterfall. In a tropical rainforest, this natural spectacle splashes into a crystal pool, where you can take a refreshing dip surrounded by massive lava rocks.