Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

When life gave this firefighter a forest fire, he made a rough-hewn sculpture park using a chainsaw.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Adobe ruins punctuate the beauty of an 800 foot canyon carved by the Canadian River.

More than 21,000 images fill this overlooked gem of a prehistoric site.

One of the American Southwest's most extensive collections of Navajo rock art.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

A unique geological area spiked with wind-carved rocks that resemble teepees.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

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

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

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.