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

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

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

A Wild West jailhouse that slid down the mountainside.

A geological mystery on Camelback Mountain.

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.

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

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

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

A spiritual vortex among the red rocks in Sedona.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

The world's largest military aircraft cemetery.

A motel dedicated to Southwestern nostalgia.

America's only nuclear missile silo open to the public.

See massive fossils that are over 200 million years old in northeastern Arizona.

A reproduction of earth's many biomes.

A self-built castle made by a mysterious man.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

One of the most elaborate displays of Jellyfish is on display at the aquarium.