The remains of a hospital ravaged by fire, once a progressive place of innovations for disabled children.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

Civil War Fort on an island in the Boston Harbor.

An elaborate, hidden model train in the Needham Town Forest.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

Hut with supplies for shipwreck survivors.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

This landmark cemetery in Boston was created more than 300 years ago.

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

A cave dug by a man directed by ghosts to find pirate treasure.

A historic bridge with a lovely acoustic anomaly.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

Three prestigious academic collections come together to create a world-class natural history museum.