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.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

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

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

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.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

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

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

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

Man-made geyser that rises to the exact height of the Gateway Arch.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

An urban forest overtakes what was the greatest failure of utopic urban housing.

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

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

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This is not your typical jungle gym.