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

Resting place of Hollywood's immortals is also site of summer film screenings.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This abandoned horse racing track was an exercise in hubris from its inception.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

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

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

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

Limestone caves with spectacular showcase chambers.

A spiritual vortex among the red rocks in Sedona.

An urban laboratory.

A reproduction of earth's many biomes.

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

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

A museum and tribute to a brave profession.

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

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

The unusual burial monument of Arizona's first governor.

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

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

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

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

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