This giant steer-skull edifice refuses to die.

The fading, forgotten remains of a once bright and booming factory.

Legends surround this jagged rock formation in the New Mexico desert.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

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

The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

Legend says train robbers stashed their gold within the depths of this unusual cave.

A self-built castle made by a mysterious man.

The same security that protects our nukes accidentally protected a gentle herd of antelope.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The start of the group that straightened the teeth of a nation.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.

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

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

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

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A reproduction of earth's many biomes.

Stairs often replace streets on the steep slopes of this old mining town.