Like Stonehenge, but with boats and oodles more charm.

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

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

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

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

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

A museum celebrating the Victorian obsession with hair art.

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.

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

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

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

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

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

Community bookshelf of 25-foot-tall book spines.

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

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.

This abandoned prison castle has become an imposing gallery of graffiti art.

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.

A lone bronze figure stands in memory of historic a 19th century land grab.

This plaque marks the spot where the first crossing guards helped get kids safely to school.