This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

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

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This little museum in the town where zombies were born celebrates the living dead.

Each step is a mere four inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

The world's largest fully steerable radio telescope.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

America's post-nuclear-attack chambers of Congress.

A cult archaeology conspiracy theory claims these West Virginia petroglyphs were written by Irish monks in Ogham.

This former zinc operation has a 90-year toxic history.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

A 21-foot-tall statue of a miner made of scrap metal stands in this West Virginia coal town.

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

This colorful West Virginia cowboy greets passersby with a glassy stare.

Two insane asylum bodies embalmed by an amateur.

A museum dedicated to the legend of Bigfoot in the Appalachian Mountains.

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.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

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

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

The isolated final resting place for perished coal miners.