This giant steer-skull edifice refuses to die.

A living museum of curated gardens honors 4,000 years of agriculture in the Santa Cruz River basin.

This Old West hotel, the longest in continuous operation in the state of Arizona, is claimed to be haunted.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

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

This rural museum is home to more than 50 local desert reptiles and the world's largest snake bite kit collection.

The former home of the army detachment that captured Geronimo.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

A stone pillar commemorates the surrender of the extraordinary Apache leader.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

What is the Thing?

Limestone caves with spectacular showcase chambers.

Out of a desire to feed hungry soldiers, a franchise-altering idea was born.

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

A mecca of Mexican art and cuisine just over the border.

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

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

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

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

The world's largest military aircraft cemetery.

Despite a recent paint job, the factory still sits empty.

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.