Esemplastic thermoplastic

Maurits Cornelis Escher (1898-1972) was the Dutch graphic artist famous for complex mathematically inspired art, often depicting perfectly impossible worlds, saturated with dimensional and perspectival illusions that play tricks on human perception. He explored geometric distortions, tesselations, interlocking figures, used uncommon polyhedra, Möbius strips and Necker cubes in his art. Having started his work with no formal knowledge of mathematics, he had purposefully studied elements of group theory, crystallography, and topology, which made his works impeccable from the mathematic point of view. Once inspired by science, his works now inspire scientists all over the world.

Relativity, the litograph on this page, is, perhaps, a little overused in popular culture, but it is remarkable and recognizable. Did you ever notice there are basements under those parks?