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

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

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

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

A subterranean haunt where wine and homemade biscottis are always on the menu.

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.

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

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

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

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

This mosaic-covered bar is brimming with curated curios.

Community bookshelf of 25-foot-tall book spines.

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

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

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

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.

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

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

Yup, that's where the name came from.

These waterfalls can be twins or triplets, depending on how much it's rained recently.

The seventh largest spring in the world.

Home to a seasonal waterfall and swimming hole in the Ouachita Mountains.