Marcel Duchamp, L.H.O.O.Q., 1919.
Lucio Fontana, Crucifixion, 1948. Glazed ceramic, 48.6 x 31.4 x 23.2 cm (19 1/8 x 12 3/8 x 9 1/8 in).
— Hans Hofmann
— Christo
Christo and Jeanne-Claude, Running Fence, Sonoma and Marin Counties, California, 1972-76. Nylon fabric and steel poles, 18 feet x 24 1/2 miles.
(Source: christojeanneclaude.net)