Nature's biggest mammal swims in landlocked Oklahoma.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

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

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

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

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

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

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

The symbol was surreptitiously built into the river bank by German prisoners of war.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A blacklight journey through a celestial art exhibit.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Recycling meets art in this colorful barricade.

Hidden in the Chihuahuan Desert resides an amazing collection of petroglyphs.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This remote camping site offers incredible stargazing opportunities.

Explore a misty river canyon from a metal bridge system.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.