Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

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

Pennsylvanian mass grave and possibly mass murder.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

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

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

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