A formerly abandoned mental institute, now back in business.

An unrealized dream to wirelessly electrify the entire Earth.

This classic red schoolhouse is said to have been where Mary and her little lamb went to school.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

Statue commemorating the use of ether in anesthesia.

The Boston square dedicated to the dark poet who was born nearby.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

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

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

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

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

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

Dim sum, served in a grand old theater.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

Memorial to a beloved puppeteer as well as all street performers.

A mysterious stone embedded at the base of a historic Boston building.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

The Atlantis of Cape Cod reemerges during the lowest of tides.

The macabre paintings created by famous suicide proponent Jack Kevorkian, or "Dr. Death."

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

One of the largest public collection of historic armored and military vehicles in North America.