The primary significance of the lower-level streets implemented from Daniel Burnham and Edward Bennett’s 1909 Plan of Chicago is the separation of commercial logistics from pedestrian and pleasure traffic. By creating multi-level thoroughfares, the city effectively optimized the central business district for economic growth while preserving its aesthetic appeal. Logistics and Economic Efficiency During the early 1900s, Chicago's downtown core (the Loop) was heavily congested with horse-drawn del

Brown Line to the Chicago Art Institute: Average Day in Chicago