Pablo Picasso made his first cubist paintings based on Cézanne's idea that all depiction of nature can be reduced to three solids: cube, sphere and cone. With the painting Les Demoiselles d'Avignon 1907, Picasso dramatically created a new and radical picture depicting a raw and primitive brothel scene with five prostitutes, violently painted women, reminiscent of African tribal masks and his own new Cubist inventions.