South Side (Chicago) in the context of North Side, Chicago

The Gerald Ratner Athletics Center (colloquially, the Rat) is a $51 million athletics facility within the University of Chicago campus in the Hyde Park community area on the South Side of Chicago, Illinois in the United States. The building was named after University of Chicago alumnus, Gerald Ratner. The architect of this suspension structure that is supported by masts, cables and counterweights was César Pelli, who is best known as the architect of the Petronas Towers.

The Ratner Athletics Center was approved for use in September 2003. The facility includes, among other things: a competition gymnasium, a multilevel fitness facility, an Olympic-sized swimming pool, a multipurpose dance studio, meeting room space, and athletic department offices. It serves as home to several of the university's athletic teams and has hosted numerous National Collegiate Athletic Association Division III regional and University Athletic Association conference championship events.

Bridgeport is one of the 77 community areas in Chicago, on the city's South Side, bounded on the north by the South Branch of the Chicago River, on the west by Ashland Avenue, on the south by Pershing Road, on the east by the Union Pacific Railroad tracks, and on the northeast by the Dan Ryan Expressway. Neighboring communities are Pilsen across the river to the north, McKinley Park to the west, Canaryville to the south, and Armour Square to the east. Bridgeport has been the home of five Chicago mayors. Once known for its racial intolerance, Bridgeport today ranks as one of the city's most diverse neighborhoods.

95th Street is a major east–west highway on Chicago's South Side, and in the southwest suburbs, is designated as 9500 South in Chicago's address system. 95th Street is 11 miles (18 km) south of Madison Street.