This locally-famous crevasse in New York State is icy all year round.

The mansion home of author Edith Wharton.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The world's largest fully steerable radio telescope.

This abandoned amusement park was built on a site with a dark history.

Two gems of Beaux Arts architecture that have been sitting vacant for years.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

The site of the first "historically true" UFO encounter in the U.S.

Glacial erratic or man-made dolmen? It probably wasn't druids.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Eight whimsical acres of metal art.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

The Binghamton area is home to six of the last remaining hand-carved vintage carousels.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

In the mid-19th century, an eight-sided house was the latest fad.

Pluto is still considered a planet in Ithaca, New York.

The final resting place for the famed creator and narrator of "The Twilight Zone."