Pennsylvanian mass grave and possibly mass murder.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

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

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

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

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

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.

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

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

This might just be the TARDIS of bookstores.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

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

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

A park full of outsider art, created by college students studying outsider art.

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

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

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

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

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

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

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.