A tunnel with windows, so you don't miss out on the impressive views.

The fifth-longest natural arch in the world, and the longest outside China.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

Oddly shaped rock formation, misassociated with a nearby utopian community.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

It's easy to see why this eclectic architectural wonder has been dubbed the "Spaceship House."

A natural formation that resembles a camel resting in the New Mexico desert.

A multi-storied adobe complex has been inhabited for more than a thousand years.

A Prada store in the West Texas desert that is never open for business.

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

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

"I did this all while you were watching TV."

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The world-record holder for the longest bridge stretching continuously over water.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

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

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

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

A clear blue swimming hole with hidden caves, still unexplored.