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

The Home and murder site of the witch of Rehmeyers Hollow.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

America's first serial killer rests in anonymity.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

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

The ruined remains of a coal mining ghost town are hidden within the woods.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

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

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

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

This public space is speckled with the eerie remnants of a defunct amusement park.

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

The abandoned coal loading dock is a canvas for unsanctioned art.

This Old Testament garden features 100 plants from biblical times.

The graffitied ruins stand hidden within the Pennsylvania woods.

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

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

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

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

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

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.