Advertisement'Armory Show' That Shocked America In 1913, Celebrates 100February 17, 2013Tom VitalefacebookEmailOn Feb. 17, 1913, the International Exhibition of Modern Art opened at the 69th Regiment Armory on Lexington Avenue in New York. The Armory Show, as it came to be known, had a profound effect on American art. (Smithsonian Institution Archives of American Art)