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.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

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

A beautiful geyser under environmental threat.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A museum dedicated to the history and exploration of both popular music and science fiction.

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

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

A walk through the historic city center, under the streets of Seattle.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The world’s first penitentiary, meant to be humane, drove men insane.