Less a museum than a bizarre fantasy world created by artists and engineers.

Giant granite rocks standing end-to-end like a train of circus elephants.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

Erosion and time have created a naturally-formed water park.

European castle ruins in an American state park are actually the product of death and grief.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.