Along the old Route 66 is an abandoned trading post made from old telephone poles, built by a former circus clown.

This historic national park is covered in the stunning ruins of red rock pueblos.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Ancient pueblos built into the base of a natural canyon wall.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A Wild West jailhouse that slid down the mountainside.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

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

The unusual burial monument of Arizona's first governor.

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

This former luxury resort in Kaua'i is now an abandoned relic.

This blowhole is supposedly caused by a trapped monster.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

San Francisco's newly reopened hands-on science museum.