 Castrovalva (M. C. Escher)

"Castrovalva" is a lithograph created by the Dutch artist M.C. Escher in 1964. The artwork depicts a fictional, impossible city that showcases Escher's fascination with architectural design and mathematical concepts. The image features a complex arrangement of staircases and buildings that seem to defy the laws of physics and perspective, creating an intriguing visual puzzle for the viewer.