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

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.

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

Yo, Adrian!

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This elaborate towering structure was once famed for its revolutionary height.

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.

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

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

A layered tribute to the work of mosaicist Isaiah Zagar.

One of the oldest of its kind.

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

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

The first park built over a freeway is a brutalist masterwork.

This working class sculpture pounds his hammer all the livelong day.

A walk through the historic city center, under the streets of Seattle.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.