A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

A prison-like structure guards the remains of a notorious Old West outlaw.

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

This fireplace-turned-monument pays tribute to the assassinated U.S. president.

Limestone caves with spectacular showcase chambers.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

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

What is the Thing?

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

The biggest solar telescope in the world helps reveal the secrets of our sun.

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

One of the largest open-pit copper mining operations in the entire country.

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

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

A rare wayfinding portmanteau of “Street” and “Avenue.”

This Old West prison built into the side of a cliff was said to be inescapable.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

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

The world's largest military aircraft cemetery.

A natural history wunderkammer in the middle of the desert.

From working out of his garage to the James Beard semifinals, one Tucson baker has kept his fan base—and his grains—local.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

Make a wish at what might be America's only Catholic shrine to a sinner.