One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

Undone by Prohibition, this abandoned brewery-turned-flour mill is now ready for its third act.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

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

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

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

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

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.

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

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

Community bookshelf of 25-foot-tall book spines.

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.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

Sid Vicious famously punched a hole in the wall of this iconic music venue.