A castle on a hill once named "the most beautiful high school in Massachusetts."

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

Dedicated to nine marines from Massachusetts who perished during the Beirut bombings.

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

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

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

Narrowest house in Boston.

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

Tragedy on Little Brewster Island memorialized.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

The world's largest collection of historic U.S. military naval vessels.

Historic seaside park featuring explorable, abandoned military structures.

This site was once the largest ski jump tower in the world.

The only surviving fragment of the lost Narragansett Pier Casino.

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

A single light illuminates one man's overshadowed contributions to street lamp history.

The home of the artist credited with introducing the tomato to the American diet.

Dedicated to the explorer who opened Japan to the West.

Mysterious stone tower featured in many alternative histories of the New World.

An ode to Japanese artist Hokusai, with a bit of a comical twist.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

This giant Boston statue of Mary is standing on a globe to show her power over the universe.