 Images of neon signs—the 'imageability' so important to Banham’s idea of une architecture autre—that would mark the commercial structures of non-plan punctuated the issue.In Banham’s contribution, "Spontaneity and Space", he suggested that "the monuments of our century that have spontaneity and vitality are found not in the old cities, but in the American West.There, in the desert and the Pacific states, creations like Fremont Street in Las Vegas or Sunset Strip in Beverly Hills represent the living architecture of our age.