This Art Deco service station has been providing tune-ups and turning heads for close to a century.

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

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

Memorializing an American tragedy of massive proportions.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

Steepest flood safety railway in the entire world.

A daily replay of the experiment that proved the rotation of the Earth.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

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

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

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

This semi-spooky remnant of an abandoned hotel provides fantastic views.

There aren't too many operational funiculars around, but Pittsburgh has two!

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

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

The graffitied ruins stand hidden within the Pennsylvania woods.

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

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

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

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

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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.

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