Cliff Garten has completed, Ribbons, a landscape sculpture commissioned by the Art in Architecture Program of the General Services Administration of the Federal Government, located at 50 United Nations Plaza in San Francisco.Ribbons responds to the hierarchy of the Beaux-Arts architecture by countering with a horizontal sculpture comprised of a central motif of concrete paving ribbons set into a larger pervious surface of decomposed granite. Elegant cast concrete benches rise, twist and fall back into these paving ribbons, creating a rhythmically punctuated circulation system that incorporates seating throughout the courtyard.