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

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

Even with its slightly risible name this colossal cross is still able to inspire awe.

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

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A kitschy, creepy St. Louis mainstay.

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

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

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

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

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

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

Bug-devouring flora are the stars of a special wing of the glass conservatory.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

This midcentury LA bar was the birthplace of tiki culture.

Megachurch turned Catholic church comprised of 10,000 glass panes.