Chicago River, architectural boat tour, daytime, sunny weather, clear blue sky, cityscape, modern skyscrapers, historic buildings, ornate bridges, sailboats, yachts, kayaks, paddleboards, reflection on calm water, vibrant city life, people taking photos, smiling tourists, open-top boat, knowledgeable guide, microphone, informative speech bubbles, bright colors, high-contrast lighting, dramatic composition, wide-angle lens.