12. Mt. Olympus

Location: Wisconsin Dells, Wis.
Website: mtolympuspark.com

The Wisconsin Dells calls itself the “Water Park Capital of the World,” which…well, good for that place. Mt. Olympus is a giant indoor and outdoor water-and-theme park complex that has a spot on this list because of Medusa's indoor water park. Expect lots of silly snake themed rides and fake Greco-Roman architecture.