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

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

This might just be the TARDIS of bookstores.

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

The oldest surviving botanic garden in the United States.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

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

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

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

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

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

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

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.

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

A rare view of a preserved Victorian science museum.

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