A historic hydroelectric power plant serves as the unusual backdrop for a public park.

The unusual burial monument of Arizona's first governor.

The exit of the largest prisoner-of-war escape attempt on American soil during World War II.

A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

Rumor had it that these concrete crosses scattered across the Arizona scrubland helped align spy satellites. (They didn’t.)

A self-built castle made by a mysterious man.

One man spent decades making these working scale models of antique cars.

Artifacts from a battleship sunk at Pearl Harbor displayed in the Capitol building of its namesake.

This 39-foot-tall version of a Hopi figure stands in Arizona.

Miniature art that tells an enormous story.

In 1975, a forestry worker in Arizona claimed to have been abducted by a UFO.

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

Millions of years of erosion created the feature for which this rock formation is aptly named.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

The rocks exposed at Valley of Fire State Park also occur in a much less known but equally spectacular area a few miles to the southwest.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

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

The remains of a large pueblo village constructed by the Salado culture, who occupied the region more than 600 years ago.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

The location where the iconic movie character declared it was time to go home.