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

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

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

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

A cemetery housing wild west legends in South Dakota.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

America's only nuclear missile silo open to the public.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

America's post-nuclear-attack chambers of Congress.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

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

A sign marks the plane crash that caused two nuclear bombs to fall in North Carolina.

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

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

Part of a secret 1970s nuclear defense program is now open to the public.

A mysterious light of unknown origin on the backroads of Missouri.

The only remaining Cold War–era Minuteman II missile control center in Missouri.

Canada's subterranean Cold War museum has doubled as a movie set.