Chicago is a real-life city located in Illinois, being the home of many big businesses and corporations. In Perfect Dark, you only explore a small back-section of Chicago. Accessible from a small gated-off alleyway or from the air, it is here that the carpark for the G5 Building and the secretive Pond Punk Bar reside. The level Chicago: Stealth takes place here.
Chicago: Backstreets of the city. A seedy, grimy part of the city of Chicago, now closed to ground traffic, it is here that the G5 Corporation has its headquarters.