Boston's Blue Line

Boston's rapid-transit Blue Line covers a distance of 5.94 miles, a twenty-three-minute commute that begins at Bowdoin station in downtown Boston, travels under the harbor, passes Revere Beach, and stops at Wonderland. Today's commuters might be surprised to learn that the line they are riding was once operated by trolley cars and narrow-gauge steam-powered commuter trains, for it was not until 1904 that the East Boston Tunnel under the harbor was completed. By 1917, the number of people ri...