Chicago cityscape, 45-minute boat tour, daytime, sunny weather, clear blue sky, Lake Michigan shoreline, Willis Tower, John Hancock Center, Navy Pier, ornate iron bridges, vintage sailing boats, modern speedboats, seagulls flying overhead, gentle waves, wooden dock, tourists taking photos, enthusiastic guide explaining architecture, historic buildings reflected in water, low-angle shot, cinematic composition, warm natural light, slight mist on the lake.