A mountaintop space observatory that is certified dark.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

Every week, a festive public jam session breaks out in downtown Asheville.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

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

One of the last of the great 1920s movie palaces is a Floridian Greco-Spanish-Persian dreamscape.

This sculpture is one of many stunning features along Tampa’s Riverwalk.

A hobby born from insomnia has turned into a hangar full of objects that have been be-buttoned by the Button King.

A nearly century-old amusement park is quietly decaying in a riverside forest in South Carolina.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

In this Florida couple's cottage, nearly every surface—inside and out—is covered in mosaic artwork.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

This museum celebrates a legendary railroad photographer whose personal life was as dramatic as his photos.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

Developed by focused shutterbugs, this museum exposes visitors to more than 6,000 different cameras.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

Whimsical artist house in the New Jersey woods.

Oldest existing wire suspension bridge in the United States.