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

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

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.

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

A museum dedicated exclusively to the lore and history of ouija boards.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

This miniature museum is home to a vast array of insects.

Over 50 whirling pools left behind from the glacial age.

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.

"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."

This supermarket is suspended 25 feet above an interstate highway.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Millions of numbers carved in glass represent the tattoos forced upon victims.

What may be Boston's finest Art Deco building, located in the city's Financial District.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Dedicated to one of the darkest moments in Irish history.

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

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Dedicated to a colonial woman who was hanged for being a Quaker.

Designed to honor all those that work as nurses around the globe.

This hidden labyrinth offers walkers some brief peace of mind.

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