Arlington Cemetery exhibit dedicated to death and grieving.

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

Where America's first doomsday cult awaited the end of the world.

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.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

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

One of the oldest of its kind.

Century-old shop, specializing in Occult products.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

In the early 1800s, surgery was also a show.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

An Irish Memorial commemorating those who perished due to potato blight.

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

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

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.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

A rare view of a preserved Victorian science museum.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.