Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

A towering bronze statue memorializes the founding father of postwar American conservatism.

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.