What is Citigroup Center (Chicago)?
[[File:CitigroupCenterChicago.jpg|thumb|right|200px|The Citigroup Center]] '''Citigroup Center''' is a 42 story, 588-foot (180 m) [[skyscraper]] in [[Chicago]], [[Illinois]]. It is located at 500 W. Madison (between Clinton and Canal Streets). The structure was designed by the architecture firm [[Helmut Jahn|Murphy/Jahn]] in a late [[Modern architecture|modernist]] style. The building was named the '''Northwestern Atrium Center'''. It was constructed between 1984 and 1987. On 8 December 2006 a man opened fire in a law office located on the 38th floor of the Citigroup Center. Four people, including the gunman, were killed. One person survived.<ref>{{Cite web |url=http://www.nbc5.com/news/10497342/detail.html |title=Gunman Thought Invention Would Transform His Life - News Story - WMAQ {{!}} Chicago<!-- Bot generated title --> |access-date=2014-08-15 |archive-date=2008-10-12 |archive-url=https://web.archive.org/web/20081012095434/http://www.nbc5.com/news/10497342/detail.html |url-status=dead }}</ref> ==References== {{reflist}} ==Other websites== * [http://www.500westmadison.com/ Citigroup Center] [[Category:Skyscrapers in Chicago]] [[Category:1987 establishments in Illinois]] {{US-stub}} {{Skyscrapers in Chicago}}