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

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

Seller of surplus nuclear research materials.

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

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

The most isolated mailbox in America lets desert travelers record their passing.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.

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

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

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

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

A geological mystery on Camelback Mountain.

An urban laboratory.

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

The site of Billy the Kid’s most famous escape and the end to the Lincoln County War.

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

A warm desert spring holds one of the rarest species on earth.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

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