Chicago River, architecture boat tour, daytime, sunny weather, Willis Tower, Tribune Tower, Wrigley Building, Navy Pier, Lake Michigan, clear blue water, sailboats, speedboats, seagulls flying overhead, urban skyscrapers, modern glass buildings, historic brick structures, ornate bridges, green parks along the riverbank, people taking photos on the boat, guide holding a microphone, excited tourists, soft natural lighting, reflection of buildings on the water, wide-angle shot, shallow depth of field.