This piece of peacetime naval wreckage memorializes the tragic sinking of the USS Maine--an event which sparked the Spanish-American war.

The world's largest piece of copyrighted artwork.

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.

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

Beautiful steampunk ghosts of early Massachusetts.

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

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

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

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

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

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

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

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

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

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

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

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

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

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

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

Narrowest house in Boston.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.