The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

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.

A Wild West jailhouse that slid down the mountainside.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

A self-built castle made by a mysterious man.

The unusual burial monument of Arizona's first governor.

A mysterious "wedding cake" castle in the middle of the urban desert.

A geological mystery on Camelback Mountain.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

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

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Massive still life just off the highway in Kansas.

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

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

When ecosystems collide in the arid Southwest.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.