The geometric shapes of the Radio City Music Hall's balcony are typical of the decorative style that came to be known as Art Deco

CREDIT: Gottscho, Samuel H., photographer. "International Music Hall, Radio City, New York, New York. Upshot Balcony III." December 9, 1932. Architecture and Interior Design for 20th Century America: Photographs by Samuel Gottscho and William Schleisner, 1935-1955, American Memory collections, Library of Congress.