Richard J. Daley Center is Chicago's premier civic center and features a massive sculpture by Pablo Picasso.
A view of the plaza at night.
The Richard J. Daley Center, also known by its courtyard Daley Plaza and named after longtime
Richard J. Daley, is the premier
civic center of the City of
Illinois. Situated on Randolph and Washington Streets between Dearborn and Clark Streets, the Richard J. Daley Center is considered one of Chicago's architectural highlights. The main building was designed in the
International Style by
Jacques Brownson of the firm C. F. Murphy Associates and completed in 1965. At the time it was the
tallest building in Chicago, but only held this title for four years until the
John Hancock Center was completed. Originally known as the Chicago Civic Center, the building was renamed for Mayor Daley on December 27, 1976, seven days after his death.
 The 648-foot (198 m), thirty-one story building features
Cor-Ten, a self-weathering steel. Cor-Ten was designed to rust, actually strengthening the structure and giving the building its distinctive red and brown color. The Daley Center has 30 floors, and is the tallest flat-roofed building in the world with fewer than 40 stories (a typical 648-foot (198 m) building would have 50-60 stories).