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

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

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

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

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The headquarters in Salem doubles as an occult art gallery.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Three prestigious academic collections come together to create a world-class natural history museum.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

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

Friction between grains of sand cause a curious "singing" sound.

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

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

An unusual library of dead things at the Rhode Island School of Design.

The vaguely man-shaped root that ate the body of the founder of Rhode Island.

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

Final resting place of one of the classic authors of horror literature.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

A museum dedicated to Nantucket's legacy as the "graveyard of the Atlantic."