(See also: Washington Park, Chicago (Community area)) Washington Park (formerly Western Division of South Park, also Park No. 21) is a 372-acre (1.5 km2) park between Cottage Grove Avenue and Martin Luther King Drive, (originally known as "Grand Boulevard") located at 5531 S. Martin Luther King Dr. in the Washington Park community area on the South Side of Chicago in Cook County, Illinois. It was named for President George Washington in 1880. Washington Park is the largest of four Chicago Park District parks named after persons surnamed Washington (the others are Dinah Washington Park, Harold Washington Park and Washington Square Park, Chicago). Located in the park is the DuSable Museum of African American History. This park was the proposed site of the Olympic Stadium and the Olympic swim