A new kind of theme park for adults off the Las Vegas Strip.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

This former tuberculosis treatment facility now stands at the center of a public park.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

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.

The final resting place of the world's first nuclear reactor.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

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

A bunker "with enough U.S. currency to replenish the cash supply east of the Mississippi" in the event of nuclear war now protects nitrate film.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

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

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

The site of an underground detonation of a megaton nuclear bomb in the middle of the Mojave Desert.

Equipment used to mine silver and lead has been preserved in this almost-ghost town in northern Nye County.

The eerie ruins of an isolated abandoned town nicknamed "the Widowmaker" for its deadly gold mine.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

A mountaintop space observatory that is certified dark.

This maze-like slot canyon is a unique gem within an already fascinating geological area.