POLISEA: Up and down, 1947 (Escher)
POLISEA: Convex and concave, 1955 (Escher)
POLISEA: Drawing hands, 1948 (Escher)
POLISEA: Escher
POLISEA: Bond of union, 1956 (Escher)
POLISEA: Eye, 1946 (Escher)
POLISEA: Möbius strip II (red ants), 1963 (Escher)
POLISEA: Cycle, 1938 (Escher)
POLISEA: Predestination, 1951 (Escher)
POLISEA: Reptiles, 1943 (Escher)
POLISEA: Day and night, 1938 (Escher)
POLISEA: Still life with spherical mirror, 1934 (Escher)
POLISEA: Still life with mirror, 1934 (Escher)
POLISEA: Metamorphose I, 1937 (Escher)
POLISEA: Sky and water II, 1938 (Escher)
POLISEA: Temple of Segesta, Sicily, 1932 (Escher)
POLISEA: La Mezquita, Córdoba, 1936 (Escher)
POLISEA: Mural mosaic at the Alhambra, 1922 (Escher)
POLISEA: San Gimignano, 1923 (Escher)
POLISEA: Tower of Babel, 1928 (Escher)
POLISEA: Bonifacio, Corsica, 1928 (Escher)
POLISEA: Eight Heads, 1922 (Escher)