This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

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

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

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

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

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

Civil War Fort on an island in the Boston Harbor.

The homestead of American patriot John Adams.

A historic bridge with a lovely acoustic anomaly.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

The bears may be gone, but their old cages can still be found.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

Radical Bookstore and Community Space.

Ice cream stand, snack bar, and time capsule of milk conveyance.

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

"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."

"Try not to knock anything over!"

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

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

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

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

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.