Modern skyscraper, Chicago cityscape, Willis Tower, glass curtain wall, steel frame, sleek lines, urban landscape, cloudy sky, morning light, 3/4 composition, panoramic view, bustling streets, pedestrian traffic, taxis, buses, street lamps, sidewalks, concrete pavement, modern architecture, contemporary design, IIT campus, Mies van der Rohe style, brutalist, minimalist, metallic materials, reflective surfaces, abstract shapes, dynamic angles.