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

A semi-scholarly approach to sex.

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

This Boy Scout retreat acted as "Friday the 13th"'s original Camp Crystal Lake.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

Six peaceful acres in a residential neighborhood dedicated to art and peace.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

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

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

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Whimsical artist house in the New Jersey woods.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Local lore claims this park is named after a young woman who jumped off a cliff.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

Series of storm drains connected to a dark urban legend.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

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