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

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

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

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

An abandoned stretch of highway, deteriorating next to the operational one.

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

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

A diorama of the Civil War, fought by cats.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A toxic ghost town sitting atop a massive coal fire.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

World's first "penitentiary," meant to be humane, drove men insane.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Dozens upon dozens of boulders engraved with scripture tell the story of one man's troubled life.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

Strange red rock formations that have been attributed to a higher power for hundreds of years.