in the desert south of las vegas, nevada, swiss artist ugo rondinone has erected 'seven magic mountains' - a sequence of colorful colossal stone configurations that rise from the rocky terrain. photo by gianfranco gorgoni see more about the project on
Vásárhelyi Győző, known as Victor Vasarely was an artist who is often regarded as the father of Op Art. He began to study medicine in Hungary, but left the race after two years. Wikipedia--Slide sequence alt to willowisp -conc.