San Francisco's architectural charm includes a variety of mixed-use buildings, in which the first floor is used as commercial space and the upper stories are residential units. The lamps and repeating square windows of the industrial-looking store on the ground floor and the quiet elegance of the second and third stories, indicative of the city's iconic older buildings, are featured here. As the sun shines on the exterior fire escape and balconies, cool shadows of repeating blue and gray cast their intricate patterns across the facade.