River tour, Chicago architecture, daytime, sunny sky, clear blue water, sailboat, speedboat, kayak, Willis Tower, Tribune Tower, Wrigley Building, Navy Pier, modern skyscrapers, historic buildings, stone walls, glass windows, steel frames, riverwalk, pedestrian path, blooming flowers, green trees, urban landscape, vibrant city life, 3/4 composition, panoramic view, soft natural lighting, realistic reflection on water surface.