Boston City Hall is the seat of city government of Boston, Massachusetts. It includes the offices of the mayor of Boston and the Boston City Council. The current hall was built in 1968 and is a controversial and prominent example of the brutalist architectural style. It was designed by Kallmann McKinnell & Knowles (architects) with Campbell, Aldrich & Nulty (architects) and Lemessurier Associates (engineers). Together with the surrounding plaza, City Hall is part of the Government Center complex, a major urban redesign effort in the 1960s.