America's first serial killer rests in anonymity.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A field of nothing but boulders which resembles a giant's gravel driveway.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

It would take 35 firetrucks to fill this enormous glacial pothole.

These disused steel furnaces are now haunting ruins that may one day be a national park.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

A local prank turned town icon.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

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

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

This park contains a number of standing stones meant to heal and inspire.

Pennsylvania's own Roswell-style UFO mystery.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

An outlandish shoe shaped house built by an eccentric millionaire.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

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

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

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

This recreation of a 19th-century dime museum is full of oddities.

Pennsylvanian mass grave and possibly mass murder.