A museum devoted entirely to the rattlesnakes and snake-related art.

Home of the International Space Hall of Fame.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

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

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

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

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

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

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A museum dedicated to the alleged Roswell Incident.

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

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The largest self-built castle in the U.S., six decades in the making.

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

The highest point in Nevada had to be decided by court order after California tried to claim it as their own.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

An eatery for UFO seekers on the Extraterrestrial Highway.

The longest living non-clonal organisms on Earth.

Mysterious meeting place for UFO hunters near Area 51.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.