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 to assume the functions of the Old City Hall, 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.Most modern opinions of the building are negative, often calling it one of the world's ugliest buildings. A 1976 poll of architects, historians and critics conducted by the American Institute of Architects, however, listed the Boston City Hall with Thomas Jefferson's University of Virginia campus and Frank Lloyd Wright's Fallingwater as one of the ten proudest achievements of American architecture in the nation's first two hundred years.