An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Seller of surplus nuclear research materials.

A natural formation that resembles a camel resting in the New Mexico desert.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

The symbol was surreptitiously built into the river bank by German prisoners of war.

A sculpture of a flying hawk made from colorful car doors.

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

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.

The U.S. Air Force has an anti-satellite laser weapon.

Deadly airliner crash preserved for those willing to climb and pay respects.

Home of the International Space Hall of Fame.

This is one really big nut.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

A cave's rare beauty held a cavernous secret hidden underground.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

"I did this all while you were watching TV."