Chicago River, daytime, sunny weather, clear blue sky, sailboat, wooden dock, modern architecture, glass skyscrapers, Wrigley Building, Trump Tower, Willis Tower, beautiful reflections on calm water, seagulls flying overhead, people taking photos, tour guide holding a microphone, smiling tourists, casual clothing, sunglasses, riverbank, cityscape, urban landscape, panoramic view, wide-angle shot, natural lighting, high-contrast image.