March 4, 2010 7:08 am Happy Birthday, Chicago! The Windy City celebrates its 173rd anniversary today. The City of Chicago was incorporated on March 4, 1837. Local 1:49 Suspect in murder of fallen CPD officer Luis Huesca taken into custody 0:51 4 Chicago restaurants named among best brunch spots in the US by OpenTable 2:07 A look at top small businesses in Chicago for Small Business Month 2:16 Chicago Sky star Angel Reese speaks on preseason, confidence with NBC Chicago's Mike Berman 2:16 Chicago City Council weighing a change to speed limits on city streets