The Metropolitan Correctional Center, Chicago (MCC Chicago) is a United States federal prison in Chicago, Illinois, which holds male and female prisoners of all security levels prior to and during court proceedings in the Northern District of Illinois. MCC Chicago was designed by architect Harry Weese. Construction began in 1971 and the facility opened in 1975. Several features make MCC Chicago's design unique from other federal prison facilities. Each cell has a slit window which is 5 inches wide by 7 feet long. The building is a right triangle shape, extrudes 28 stories, and has a rooftop exercise yard. (wikipedia.org)