Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

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

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

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

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

One of few surviving standpipe water towers in the U.S.

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

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

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

A wax effigy of St. Valentine hides one of the saint's relics.

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

An abandoned factory along the Mississippi coated by a giant mural.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

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

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

A mysterious light of unknown origin on the backroads of Missouri.

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

This is not your typical jungle gym.

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

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The hallucinogenic center of the ancient world.

A fantastic castle rumored to be the birthplace of King Arthur.

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

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.