This mysterious artificial cave has long puzzled New Englanders.

A monument in a town outside of Boston celebrates the visits of Edgar Allan Poe.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

The ceiling of this vintage movie palace is covered in fantastic Art Deco murals.

The mighty room where the poet spent most of her life is available to rent for an hour or two.

Burial ground for revolutionary veterans attracts tall tales, ghost hunters, not enough historians and preservationists.

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

Mass Grave of 48 colonists killed in a raid by Native Americans and the French in 1704.

Haunted boulder in a front yard with a witch painted on it.

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.

This headstone-like marker inscribed with three words has been an utter mystery for over a century.

Rumored to have tormented a family in the late 1960s, this toy now resides in a quiet little oddities shop.

Ornate and macabre headstone in one of the country's oldest cemeteries.

Statue commemorating the use of ether in anesthesia.

A defunct all-girls college which may be the resting place of H.P. Lovecraft's real-life Necronomicon.

The secluded beach getaway from Wes Anderson's dreamy summer romance.

The widow of Benjamin Franklin's brother became the first female newspaper editor in the United States.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

Former abode of notable poet, complete with literary references and stories of ghosts.

Annual celebration commemorating the 1965 sighting of strange lights in the town.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

The final resting place of New England's last "vampire."