I have a soft spot for Maurits Cornelis Escher (June 17, 1898 -- March 27, 1972) on account of his use of symmetry and recursion in much of his art. Some of my favorite Escher works are shown below.

Disclaimer: These pictures are shown here merely to illustrate some of my preferences in art. The copyrights do not belong to me, and these pictures may not be reproduced for sale without explicit consent of the copyright holder.