Chicago River, morning sunlight, calm waters reflecting city skyline, a luxurious wooden boat, vintage nautical elements, polished brass fixtures, plush red seats, tourists holding cameras, binoculars, and guidebooks, knowledgeable tour guide speaking through a microphone, iconic Willis Tower, Tribune Tower, Wrigley Building, and other historic architectural landmarks, ornate bridges, lush greenery along the riverbanks, seagulls flying overhead, gentle waves, soft sunlight casting long shadows, cinematic composition, shallow depth of field.