The Chicago River divides the city into three broad sections, known traditionally as the North, West, and South sides. The North Side is largely residential, interspersed with industry. The West Side generally is a lower-income residential area and contains numerous industrial, railroad, and wholesale-produce facilities. The South Side occupies almost half the city and contains diverse residential neighborhoods, ranging from decayed tenement districts to areas of modest detached houses. The South Side also incorporates the heavily industrialized Calumet district, which includes an extensive port area.
Chicago has one of the world's most beautiful lakefronts. With the exception of a few miles of industry on its southern extremity, virtually the entire lakefront is devoted to recreational uses, with beaches, museums, harbors, and parks. The lakefront parks include three of the city's most important: Grant Park, near downtown; Lincoln Park, to the north; and Jackson Park to the south.