Chicago River, summer afternoon, blue sky with few white clouds, sunny weather, 40-meter-long luxury boat, sleek modern design, large glass windows, wooden deck, captain standing at the helm, tourists wearing sunglasses and hats, holding cameras, smiling and chatting, scenic city skyline in the background, Willis Tower, John Hancock Center, Tribune Tower, Wrigley Building, greenery along the riverbank, blooming flowers, tranquil atmosphere, soft natural light, 3/4 composition, panoramic view, shallow depth of field.