The Bridgeport Downtown South Historic District is a 27acre historic district in Bridgeport, Connecticut that was listed on the National Register of Historic Places in 1987. The district is roughly bordered on the east by Main and Middle Streets, on the north by Elm Street, the west by Broad Street, and the south by Cesar Batalla Way. It includes 50 contributing buildings and 12 non-contributing buildings. The district includes one building, 149-165 State Street, designed by noted architect Cass Gilbert. Other notable buildings include the separately-listed Barnum Museum, Sterling Block-Bishop Arcade and United Illuminating Company Building, as well as McLevy Hall, the former city hall and county courthouse.