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

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

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

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

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

A museum celebrating the Victorian obsession with hair art.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

Curious cave that stays a cool 56 degrees all year long.

Like Stonehenge, but with boats and oodles more charm.