Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

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

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

America's first serial killer rests in anonymity.

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

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.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The graffitied ruins stand hidden within the Pennsylvania woods.

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

In which a local geological marvel becomes a quaint roadside attraction.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

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

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

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

A beautiful oddities shop crammed with strange and morbid curiosities.

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

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A rare view of a preserved Victorian science museum.

A toxic ghost town sitting atop a massive coal fire.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

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