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

These aggressively sustainable art homes look like something out of 1970's science fiction.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

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

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

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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

A multiversal transit station located right below a highway interchange.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

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

This old ruin once served as a post office, a train station, a restaurant, and a bridge to the Atomic Age.

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

Once a dining hall for boarding school students, this lodge was a popular haunt for nuclear physicists working on the Manhattan Project.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

This sidewalk tribute honors Colorado's great culinary creation.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

The first transatlantic wireless signal was received at this 17th-century fort.

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

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

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

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

The former home of the army detachment that captured Geronimo.