The site of Paul Revere's historic two lantern warning.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

This landmark cemetery in Boston was created more than 300 years ago.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

Narrowest house in Boston.

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

"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."

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Beautiful steampunk ghosts of early Massachusetts.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

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

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

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

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

The Boston square dedicated to the dark poet who was born nearby.

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.

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

An enormous, inside-out glass globe built in 1935.

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

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

Welcome sign announcing Haverhill, MA, as the birthplace of horror rocker/artist/director Rob Zombie.

The largest body of water in Massachusetts annihilated four small towns just to slake Boston's thirst.

This impressive Boston holy house is the American mecca for Christian scientists.