This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

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.

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.

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

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

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

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

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

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

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

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

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

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

A rare view of a preserved Victorian science museum.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A toxic ghost town sitting atop a massive coal fire.

Mysterious rocks that ring musically when struck.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.