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

Mysterious rocks that ring musically when struck.

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

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

Century-old shop, specializing in Occult products.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

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

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

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

The first neighborhood to implement the Garden City model in its suburban planning.

Edison's cast-in-place concrete houses were a failure, but way ahead of their time.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

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

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A wooden theatre that remains the heart of a charming Victorian-era New Jersey enclave.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

The site of one of history's most indelible and horrific tragedies.

Several times a year, during low tide, two pairs of historic train tracks are revealed on this New Jersey beach.