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

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

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

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

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

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

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

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.

Over fifty whirling pools left by the glacial age.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An eccentric inventor's castle home with its own indoor weather system.

A beautiful Victorian-era cemetery, complete with a miniature village.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

An enormous, inside-out glass globe built in 1935.