Once the future of underwater combat, this old sub is now open for visitors to muck around in.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

This statue intended for children to enjoy became a minor political spat.

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

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

This Gothic castle was inspired by Erik the Red's Viking residence at Brattahlid in Greenland.

A historic custom house with ties to George Washington is now a shrine to local nautical history.

This supermarket is suspended 25 feet above an interstate highway.

The world's largest piece of copyrighted artwork.

This unassuming stone commemorates a condiment factory gone up in smoke.

This wooly sculpture supposedly marks the birthplace of a famous nursery rhyme, or not.

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

The right to a full beard is honored by the grave of a man who was attacked and jailed due to his facial hair.

A lighthouse on a diminutive island was one of the first of its kind to guide seamen home.

The Burnside Fountain and its questionable interpretation.

This classic red schoolhouse is said to have been where Mary and her little lamb went to school.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

The oldest living cultivated fruit tree in North America.

This small shop walked so America could run on Dunkin'.

Civil War Fort on an island in the Boston Harbor.

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

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

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

Hut with supplies for shipwreck survivors.