Composition 8, 1914 by Piet Mondrian, The Guggenheim Museum, NYC.
This is Mondrian's interpretation of a tree after seeing the cubist work of Braque and Picasso. He eventually took it to an even more abstract level.
Piet Mondrian Composition C (No.III) with Red, Yellow and Blue © 2007 Mondrian/Holtzman Trust c/o HCR International, Warrenton, VA