Chicago's architecture museum, grand staircase, marble floors, high ceilings, intricate details, ornate chandeliers, large windows, natural light pouring in, exhibition halls, rows of display cases, ancient artifacts, historic buildings' models, interactive exhibits, visitors walking, reading, taking photos, softbox lighting, subtle shadows, warm beige walls, wooden benches, plants, cityscape view from the window, Willis Tower, cloudy sky, afternoon sunlight filtering through the clouds.