Chicago, Willis Tower, John Hancock Center, modern skyscraper, sleek metallic exterior, intricate stone carvings, grand entrance, ornate bronze doors, marble lobby, geometric patterns, urban landscape, cloudy sky, daytime, warm sunlight, sharp angles, bold lines, contemporary architecture, steel beams, glass windows, complex structures, historical landmarks, American Gothic style, ornamental stonework, symmetrical composition, wide-angle shot, high-contrast lighting.