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

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

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

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.