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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A layered tribute to the work of mosaicist Isaiah Zagar.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

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

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

Abandoned silver mine strewn with wrecked and twisted structures.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.

The folks at the Devil's Rope Museum want you to get hooked on barbed wire history.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

Seller of surplus nuclear research materials.

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

More than 21,000 images fill this overlooked gem of a prehistoric site.

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

One of the American Southwest's most extensive collections of Navajo rock art.

Home of the International Space Hall of Fame.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

A sprawling collection of over 106,000 toys from around the world.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

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