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

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

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

In the 19th century, this was the center of Boston's Black community.

A plaque marking the famous abolitionist's birthplace often overlooked by visitors to the nearby Charles Sumner House.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

The massive machine creates cracking displays of indoor lightning.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

A monument marks where a convent was burned by an anti-Catholic mob in 1834.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

This hidden labyrinth offers walkers some brief peace of mind.

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

Museum dedicated to awful artwork.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.