This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."

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

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

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

The homestead of American patriot John Adams.

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

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

Tragedy on Little Brewster Island memorialized.

A luxury hotel constructed out of a former jail.

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

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

The Boston square dedicated to the dark poet who was born nearby.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

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

A stone marker commemorating the first time sound was transmitted over wires.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

This historic patch of real estate offers a glimpse of colonial Boston.

A mysterious stone embedded at the base of a historic Boston building.

Dedicated to one of the darkest moments in Irish history.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The murals have transformed a residential alley into a vibrant drive-through gallery.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.

In the middle of Calvary Cemetery stands this singular memorial to a small boy who died too young.