Perhaps the most scandalous statue of America's first president.

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

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

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

A failed piece of Orientalism has become the proud symbol of a community.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

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

Where the oil industry began.

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

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

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

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

Memorializing an American tragedy of massive proportions.

A toxic ghost town sitting atop a massive coal fire.

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

An abandoned stretch of highway, deteriorating next to the operational one.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

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

This dramatic rail curve was once the target of a failed Nazi attack.