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

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

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

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

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

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.

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

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

This is not your typical jungle gym.

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

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

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

European castle ruins in an American state park are actually the product of death and grief.

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

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

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

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

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

Home of mutant livestock.

Tribute to the famous Notre Dame football coach who died in a plane crash.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

The highest point in Oklahoma used to be a lawless outlaw's paradise.

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

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