Chicago architectural boat tour, Lake Michigan, daytime, sunny weather, calm water, sleek modern boats, guided tour, tourists on board, wearing casual summer clothes, sunglasses, holding cameras, interested facial expressions, Chicago cityscape in the background, Willis Tower, Navy Pier, ornate bridges, historic buildings, stone and steel structures, detailed boat engines, soft reflections on the water surface, panoramic view, 3/4 composition, warm and soft ambient lighting.