Chicago River, 90-minute architectural tour, daytime, clear blue sky, sunny weather, gentle breeze, water reflections, cityscape, modern skyscrapers, historic buildings, Willis Tower, Tribune Tower, ornate bridges, boat ride, people taking photos, guide holding a microphone, standing at the bow of the boat, casual clothing, sunglasses, happy expressions, urban landscape, steel and glass structures, intricate stonework, dramatic lighting, cinematic composition, wide-angle shot.