The remains of one of the last mining camps developed on the New River.

An abandoned coal mine reached by a steep hike.

This former fire tower found new life as a communications hub complete with a scenic overlook.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

This structure among the trees was the result of divine inspiration.

These early tent-shaped grave coverings are unique to Appalachia.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

This improbable contraption was passed down through five generations of industrious Tennesseans.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

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

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

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

One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.

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

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.