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

Bronze statue marks the spinach capital of the world.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

Celebrate the history of the rich and truly misunderstood relationship between man and pigeon.

Very likely the only museum in the world that celebrates the glory of the humble banjo.

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.

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.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

The Grand Canyon of Texas.

A time-capsule monument reminding future generations of the importance of efficient and effective use of natural resources.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

Home of the International Space Hall of Fame.

One part antique store, one part curiosities hodge-podge.

The world's largest squirrel statue clutches a pecan bigger than your head.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

Continuing the tradition of the dime museum in style.

A modernist landscape of water and sci-fi concrete.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.