A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

Gutted airplanes slowly decay in a Florida field.

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

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

Century-old shop, specializing in Occult products.

A layered tribute to the work of mosaicist Isaiah Zagar.

One of Philadelphia's largest murals resides hidden under this bridge.

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

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

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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.

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Mysterious rocks that ring musically when struck.

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