Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

Narrow gorges and deep pools created by long-ago glaciers.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

Step into a pastel time capsule where candy is truly dandy.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This jail which was in service for over a century is now open for curious visitors.

Pennsylvania's own Roswell-style UFO mystery.

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

It would take 35 firetrucks to fill this enormous glacial pothole.

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

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

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

The graffitied ruins stand hidden within the Pennsylvania woods.

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.

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

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.

Mysterious rocks that ring musically when struck.

A layered tribute to the work of mosaicist Isaiah Zagar.

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.