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

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

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

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

An artificial crater field that trained astronauts for lunar exploration.

Don't blink or you'll miss it.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

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

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

The fading, forgotten remains of a once bright and booming factory.

A spiritual vortex among the red rocks in Sedona.

A stealthy Apache hideaway that became the haunting site of a mass grave.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

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

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

Rippling sand dunes frozen in the Arizona rock.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This quirky curiosity shop takes its cues from the world's bazaars.