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

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

A collection of full-size movie monsters opened to the public.

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The massive machine creates cracking displays of indoor lightning.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

Two thousand artifacts from around the world collected by one woman who loved to travel.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

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

This supermarket is suspended 25 feet above an interstate highway.

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

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

One of the oldest baseball fields in continuous use has been hosting games since 1878.

No one really knows how these old hobby horses got here, but the herd keeps growing.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.