Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

This bird-shaped rock formation defies gravity, time, and classification.

A frozen oasis lies beneath the scorching New Mexico desert.

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

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

Visitors to this public park will also find the ruins of an old western fort.

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

This church on a Tohono O'Odham reservation has stood since 1797.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

The world's largest military aircraft cemetery.

What is the Thing?

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

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Seven ceramic sculptures are scattered around this California college campus.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Quite simply the largest tree in the world (by volume).

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

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

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."