The abandoned coal loading dock is a canvas for unsanctioned art.

The graffitied ruins stand hidden within the Pennsylvania woods.

This secluded walking trail is a hidden gem of a Pittsburgh park.

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

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

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

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

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

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

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

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

An enormous overgrown greenhouse teeming with graffiti and wildlife.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

Series of storm drains connected to a dark urban legend.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A recently abandoned psych ward at the end of Sanatorium Road.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.