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

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

Community owned and operated, this property is home to a diverse set of nudists.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

When ecosystems collide in the arid Southwest.

The largest self-built castle in the U.S., six decades in the making.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A cemetery housing wild west legends in South Dakota.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

These otherworldly limestone formations jut out from the Kansas prairie.

This small town bank is very aware of its name thank you very much.

This museum features the original car used on the Beverly Hillbillies sitcom.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

One of America's first planned communities is preserved in a state park.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

A small town garden is dedicated to a psychic dog with the most soulful eyes.

Curious rock formations in a tiny Kansas state park.