The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A ghost town that was wiped out by a flood in 1940.

Veritable museum of 20th century country music history.

This mysterious twin turboprop Grumman G-159 covered in graffiti has spent a decade and a half abandoned.

A natural sandstone bridge hidden in the Sewanee forest.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Mile-long cave system near Great Smoky Mountains.

The art studio of an early 20th-century painter, hidden amid the Great Smoky Mountains.

Ethereal alien hums and haunting whale songs emitting from...a giant sheet of vibrating metal?

More than five miles of underground passageways.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

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

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

The hero of the women's suffrage movement birth home is now a museum dedicated to her legacy.

Resonating tubes make music from highway overpass.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

More than 200 unconventional musical instruments that anyone can play.

A stunning garden filled with fantastical environmental folk art and sculptures.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The mighty room where the poet spent most of her life is available to rent for an hour or two.

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.

Books you don’t need in a place you can’t find.