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

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

Destroyed by flood waters, prison now serves as a training ground for armed forces.

A museum dedicated to man's boldest venture.

The world's second largest rocking chair is found on Route 66 in Cuba... Missouri.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

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

Like Stonehenge, but with boats and oodles more charm.

A floating museum that was sunk by a flood and left to rot in the tides.

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

This historic cliffside mansion uses a natural cave for air conditioning.

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

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.

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

This is not your typical jungle gym.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

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

A museum celebrating the Victorian obsession with hair art.

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

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

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.