This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Marta Becket's hand-painted theater in the desert.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

This old abandoned sign flickers to announce a motel that isn't even there.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Steep canyon walls hide a forested oasis in the West Texas desert.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

Ancient pueblos built into the base of a natural canyon wall.

A motel dedicated to Southwestern nostalgia.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

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

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

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

Home of the International Space Hall of Fame.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A multi-storied adobe complex has been inhabited for more than a thousand years.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

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