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

These medicine cabinet staples are part of the museum's collection of everyday objects.

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

Yo, Adrian!

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

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

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

A park full of outsider art, created by college students studying outsider art.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

Mysterious rocks that ring musically when struck.

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

The final resting place of two members of the infamous Doan gang, notorious outlaws and Revolutionary War Loyalists.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.