Kluczynski Federal Building
Kluczynski Federal Building (before Chicago Federal Center) is a modernist skyscraper in the downtown Chicago Loop located at 230 South Dearborn Street. The 45-story structure was designed by Ludwig Mies van der Rohe and completed in 1974. It is 562 feet (171 m) tall. It holds the offices of both Illinois senators Mark Kirk and Dick Durbin.
- "John C. Kluczynski Federal Building and U.S. Post Office, Loop Station". General Services Administration. September 26, 2010. Retrieved 2011-02-11.