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

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

University City's quirkiest resident lives in a park named after its first.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

This is not your typical jungle gym.

A notorious Route 66 eatery once frequented by Al Capone.

A chessmaster's dream destination.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

A big museum full of little worlds.

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

A kitschy, creepy St. Louis mainstay.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

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

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

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

Spanking machines, fake goats, and more devices of humiliation are on display in this museum of fraternal initiation devices.

A museum dedicated to man's boldest venture.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

The home used in just a few seconds of film that came to define the setting of a hit sitcom.

Patrick Dougherty's fantastic living tree sculptures, mind-blowing but temporary.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

Symbolic attempt to overcome the issues of life.