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

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.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

This mosaic-covered bar is brimming with curated curios.

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

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

A big museum full of little worlds.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

Like Stonehenge, but with boats and oodles more charm.

This is not your typical jungle gym.

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.

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

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

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

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.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This abandoned amusement park was built on a site with a dark history.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.