Torony-Nagy , by victor vasarely , 1969 , abstract , Op Art style
A painting of four colorful skyscrapers on a black background.
 a painting of three skyscrapers. The first skyscraper on the left is blue. The second skyscraper in the middle is green. The third skyscraper to the right is orange. The green skyscraper has yellow and purple squares on it. The squares are arranged in a zig zag pattern. The background of the image is black.