Once a gas station, this flightless airplane beside the Old Dixie Highway now houses a barbershop.

This building contains handprints that are well over a century old.

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

Take a self-guided tour through one of Colorado's most elevated mining districts.

When ecosystems collide in the arid Southwest.

A natural formation that resembles a camel resting in the New Mexico desert.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

A museum devoted entirely to the rattlesnakes and snake-related art.

A multi-storied adobe complex has been inhabited for more than a thousand years.

These aggressively sustainable art homes look like something out of 1970's science fiction.

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

Mile-long cave system near Great Smoky Mountains.

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

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

This museum pays tribute to the Cherokee leader who created a written language for his people.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

Largest Roman Catholic church in North America.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

Electrical pylon in the shape of Disney's beloved mouse.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.