This mysterious artificial cave has long puzzled New Englanders.

This roadside attraction attracts kids with dinosaurs before blindsiding them with geology.

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

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

Impossibly life-like natural history models created out of glass by a father and son.

One man’s hobby is another man’s world of metal wonders.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

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

A more than 260-year-old crypt built on Boston's oldest English burial ground.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

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

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

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

It's not a typo, now say it five times fast!

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

A mysterious collection of stones stand outside a small New England town.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

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

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

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

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

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

The site of Paul Revere's historic two lantern warning.