the Museum of Modern Art MOMA a museum in New York City which contains one of the world's finest collections of modern art and photography. Museum in New York City, the world's most comprehensive collection of U.S. and European art from the late 19th century to the present. It was founded in 1929 by a group of private collectors. The original building on 53rd St. opened in 1939; a later addition and sculpture garden were designed by Philip Johnson (1953). A condominium tower and western wing, doubling the exhibition space, were completed in 1984. Its collections of Cubist, Surrealist, and Abstract Expressionist paintings are extensive; other holdings include sculpture, graphic arts, industrial design, architecture, photography, and film. Through its permanent collections, exhibitions, and many publications, it exerts a strong influence on public taste and artistic production