The first declared National Monument in the United States.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The first permanent memorial to a unique secret weapon of World War II.

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

These free-roaming horses were once destined to disappear from the land.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

A museum and tribute to a brave profession.

Once a year, at exactly 11:11 a.m., this monument comes to life.

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

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

The cinder cone volcano with a less than complimentary name.

A Wild West jailhouse that slid down the mountainside.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

A geological mystery on Camelback Mountain.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

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

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

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

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.