Chicago cityscape, architecture tour, daytime, sunny, blue sky, Willis Tower, skyscraper, modern, glass, steel, reflection, urban, crowded streets, pedestrians, buses, taxis, American flags, street performers, hot dog vendors, Millennium Park, Cloud Gate sculpture, Frank Gehry's Jay Pritzker Pavilion, Lurie Garden, flower beds, greenery, city hall, historic buildings, ornate details, stone carvings, Gothic style, grandeur, symmetric composition, wide-angle shot, cinematic lighting, vibrant colors.