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

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

A reproduction of earth's many biomes.

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

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

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

A Wild West jailhouse that slid down the mountainside.

Take a monster truck tour around an ostrich farm in the middle of the desert.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

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.

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

A geological mystery on Camelback Mountain.

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

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

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

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

A white oak with property rights.