Animated photograph of the Armory Show, 1913 (exterior of the 69th Regiment Armory at 305 Lexington Avenue and 25th Street, New York)

New York. Armory of the 69th Regiment. "International Exhibition of Modern Art". 17 February - 13 March, 1913 (traveled to Chicago. Art Institute of Chicago, 24 March - 15 April 1913; Boston. Copley Hall, 28 April - 18 May, 1913)
In his preface to the catalog for the "International Exhibition of Modern Art" (a.k.a. "Armory Show"), Frederick James Gregg quotes Arthur B. Davies, president of the Association of American Painters and Sculptors, the show's newly formed organizing society:
"[T]he time has arrived for giving the public here the opportunity to see for themselves the results of new influences at work in other countries in an art way. In getting together the works of the European Moderns, the society has embarked on no propaganda. [...] Its sole object is to put the paintings, sculptures, and so on, on exhibition so that the intelligent may judge for themselves by themselves."
With almost two thousand works on view and close to a 100,000 visitors in New York alone, the Armory Show introduced the United States to modern European Art. The press extensively covered the event, making Marcel Duchamp's Nude Descending a Staircase No.2 (1912) the show's succès de scandale. The Cubist room was soon dubbed "The Chamber of Horrors," while Duchamp's painting was described as "a lot of disused golf clubs and bags," "an explosion in a shingle factory" and an "academic painting of an artichoke."
Animation by Alvarez Greg and Rhonda R Shearer; text complied by Thomas Girst