Chicago’s Cultural Center, formerly the Public Library, is a great chunk of stone at the corner of Michigan Avenue and Randolph Street. It has survived the years and the vagaries of taste through sheer weight, it seems, since there is little about it of artistic quality. The stolid architecture is mostly notable for housing a multifaceted (and richly adorned) interior. Abuzz with activity and music, the building is a hub of information with a slant on the “Cultural” part of its name.