The remains of a 19th century spring, and the site of an infamous unsolved murder.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

The only surviving fragment of the lost Narragansett Pier Casino.

Off a hiking trail in Rhode Island stands a picturesque memorial to a long-forgotten war.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

The final resting place of New England's last "vampire."

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

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

This hidden labyrinth offers walkers some brief peace of mind.

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

Impossibly life-like natural history models created out of glass by a father and son.

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

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.

A unique columnar residence built in the 19th century.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

World's second largest particle accelerator, where nature reveals its secrets.

A source of civic pride, though the reason for its construction is unknown.

The sign to a demolished amusement park now stands in front of a local library.

Pumpkin-like gargoyles and grotesques peer down from the rooftop of this unassuming apartment building in Illinois.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.