Now demolished, it was formerly located on the site of the current Boston City Hall in Government Center.
[3] In 1898 Adams Square became a stop along the Tremont Street Subway (the predecessor to the MBTA Green Line) with the opening of Adams Square Station, whose large granite head house became the principal architectural feature of the area.
[4] Subsequent alterations to the square in the early twentieth century were undertaken in an effort to relieve congestion caused by increasing automobile traffic.
In 1928 the city removed the Adams statue and relocated it to adjacent Dock Square in order to improve traffic flow, and three years later the original head house of the subway station was torn down to increase driver visibility and replaced with a significantly smaller entranceway.
[5] In the mid-20th century the square was targeted for urban renewal as part of the Government Center project.