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

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

Tragedy on Little Brewster Island memorialized.

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

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

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

The final resting place of the first documented Chinese person in the United States lies in a Boston cemetery.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

Dedicated to one of the darkest moments in Irish history.

One of the indelible moments of the American Revolution took place at this location.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

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

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The oldest playground in America.

The 1920s child prodigy author was last seen here at her Brookline home before vanishing at age 25.

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

Dedicated to the neverending mathematical constant, this plaque next to a park bench was sponsored by an anonymous benefactor.

Dedicated to a colonial woman who was hanged for being a Quaker.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

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.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."