Hand with reflective sphere

                                            1935

drawing hands

                         1948

Relativity

              1953 

upstairs and downstairs

                                      1960

still life and street

                              1937

M.C. Escher

Dutch graphic artist

Escher is most known for mathematically inspired woodcuts, lithographs, and mezzotints. These feature impossible constructions, explorations of infinity, architecture, and tessellations.