The appearance of the bridge is meant for airiness and lightness. The roof has slope ends curved to the top, giving the building sophistication and airiness. The proportionally diminishing architectural shapes create the impression of airiness and space. Audiophiles felt that cone tweeters lacked the "airiness" of dome tweeters or other types. Symmetrical rows of rectangular window openings give the heavy concrete a sense of airiness. The overall effect was one of airiness and a neoclassical appearance. "Butterflies" floats with magical airiness.