A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

The oldest surviving botanic garden in the United States.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

In which a local geological marvel becomes a quaint roadside attraction.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

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

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

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

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

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

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

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A beautiful oddities shop crammed with strange and morbid curiosities.

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

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

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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