Last week I visited the Museum of Modern Art in New York (the MoMa). They own one of the most discussed paintings of Pablo Picasso, i.e. Les Demoiselles d'Avignon (1907). This painting, that was originally despised by the whole art-scene, proved to be one of the the most influential paintings of the first half of the 20th century. It did not just mark a significant stylistic change for the works by Picasso, but it had also significant effects on the styles of Matisse, Derain and Braque. The painting was acquired by the MoMa in 1937.
Photo below: Les demoiselles d'Avignon, Pablo Picasso 1907, photo by Barend Jan de Jong (Leica M9, Summicron 28mm).