Chicago River, architectural landmarks, daytime, sunny, blue sky, clear reflection, calm water, tourist boat, people sitting, holding cameras, smiling, excited, Chicago Tribune Tower, Wrigley Building, Willis Tower, Marina City, Aqua Tower, modern skyscrapers, glass and steel structures, ornate bridges, latticework railings, wooden docks, vibrant city life, 3/4 composition, low-angle shot, soft natural lighting.