Olympic Rainbow
1967 marks Piene's involvement with Sky art, a term he coined in 1969 and which allowed him to use landscape and cities themselves as the focal point of his work. For the closing of the 1972 Summer Olympics in Munich, Piene created the sky work Olympic Rainbow, made up of five differently coloured helium-filled polythene tubes, each one 600 m long.
Cy Twombly
1955
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Alexander Shilov
1989
Yves Gaucher
1991
Joseph Beuys
1952