Day and Night 1938

"Day and Night" is a 1938 wood-engraving by Dutch graphic artist M.C. Escher, known for his exploration of mathematical and geometric principles in art. The artwork depicts a landscape with two flocks of birds flying in opposite directions, creating a visual illusion. The birds transform into each other, switching between black and white, symbolizing the duality of day and night. The repeating patterns and intricate detail characteristic of Escher's work create a mesmerizing and thought-provoking piece.