America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

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

Hidden behind West Philadelphia rowhomes is a haven for migratory and local bird species both ordinary and rare.

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

Arlington Cemetery exhibit dedicated to death and grieving.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

Pennsylvanian mass grave and possibly mass murder.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

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

A recently abandoned psych ward at the end of Sanatorium Road.

Mysterious rocks that ring musically when struck.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This Boy Scout retreat acted as "Friday the 13th"'s original Camp Crystal Lake.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

A toxic ghost town sitting atop a massive coal fire.

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

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