An inclusive, climate-resilient playground honors the life of a young Boston Marathon bombing victim.

A giant sculpture head with an optical illusion dedicated to the longtime conductor of the Boston Pops.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

This art display in Dedham honors a local fish, and is dedicated to the volunteers who restored the canal.

Civil War Fort on an island in the Boston Harbor.

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

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

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

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

Though a proud Texan, the 41st President of the United States started life in the suburbs of Boston.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

This beautiful architectural gem was the first waste treatment facility in Boston.

Dedicated to one of the darkest moments in Irish history.

The infamous Boston Mob ran rackets from an office here in the 1970s.

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

The massive machine creates cracking displays of indoor lightning.

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

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

One of the now-less-hidden floral gems of the "Emerald Necklace."

The last remaining attraction from Paragon Park.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

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

The last remaining 19th-century tenement from Boston's old West End neighborhood.