Koen Steenbergen in front of Mondrian's grave marker in Cypress Hills Cemetery © Barbara Snow
Piet Mondrian, Composition II in Red, Blue, and Yellow, 1930 - Wikipedia
Mondriaan's birth house in Amersfoort, The Netherlands, picture by Wikipedia contributor: Ellywa
He was an important contributor to the De Stijl art movement and group, which was founded by Theo van Doesburg. He evolved a non-representational form which he termed Neo-Plasticism. This consisted of a grid of vertical and horizontal black lines and the use of the three primary colors. – Wikipedia
Piet Mondrian in 1924- Wikipedia