Some of the tools we use to tackle the design of the facade are offset rhythm and patterns of windows, bold cutouts, and color variation. Often these strategies are combined or layered to maximize variation and to create visual interest. For example, Rene Cazenave Apartments (RCA), which occupies an urban site adjacent to the Bay Bridge freeway exit into San Francisco, is designed to create a distinct urban experience through the composition of the facades. The structural bay is divided into three parts along Folsom Street. Two sizes of windows shift along the grid. Overlaid on this system, a pattern of notches cut through both sides of the facade, punctuating the active skin and providing a larger rhythm of openings across the building.