Chicago river tour, modern architecture, skyscraper background, sunny day, clear blue sky, boat ride, people on board, tourist attractions, Willis Tower, John Hancock Center, Navy Pier, Lake Michigan waterfront, urban landscape, steel and glass buildings, reflective windows, riverwalk, pedestrian path, blooming flowers, greenery, sailboats, yachts, seagulls flying overhead, 3/4 composition, wide-angle lens, warm natural light.