Marcel Duchamp’s Fountain (1917), consisting of a men’s urinal signed by the artist, introduced the groundbreaking concept that even the simplest, most everyday objects can be the focus of a creative process and has been voted the most influential modern work of all time by a panel of 500 art experts.
Following in second and third respectively, are Picasso’s Les Demoiselles d’Avignon (1907) and Andy Warhol’s Marilyn Diptych (1962).