The Chicago city flag’s sky-blue bars and red stars are everywhere in this city.. The three white stripes represent the North, West, and South sides.
The top blue stripe represents Lake Michigan and the North Branch of the Chicago River. The bottom blue stripe represents the South Branch of the river and the canal. The four six-pointed red stars represent major historical events: Fort Dearborn, the Great Chicago Fire of 1871, the World’s Columbian Exposition of 1893, and the Century of Progress Exposition of 1933–34.