This giant Massachusetts sycamore is said to hold the dubious distinction of being the "widest tree East of the Mississippi!"

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

Where Eunice Williams was murdered by natives, and where locals say her ghost still haunts.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

A stunning garden filled with fantastical environmental folk art and sculptures.

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

Civil War Fort on an island in the Boston Harbor.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

Hut with supplies for shipwreck survivors.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

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.

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

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

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

This railroad tunnel was once the longest in Massachusetts.

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

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

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

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.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

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

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