Modern skyscraper, Philadelphia PA, urban cityscape, glass facade, steel structure, sleek lines, minimalist design, corporate office building, daytime, clear blue sky, fluffy white clouds, busy streets, yellow taxi cabs, pedestrians walking, suited businessmen, briefcases, laptops, coffee cups, contemporary architecture, geometric shapes, reflective windows, city hall, historic landmarks, Independence Mall, Liberty Bell, American flag, autumn foliage, fallen leaves, sidewalk cafes.