Why did M.C Escher draw Waterfall?

M.C. Escher created "Waterfall" to explore the concept of paradox and the manipulation of perspective. The artwork features an impossible structure where water appears to flow uphill, defying the laws of physics. This reflects Escher's fascination with mathematical concepts and spatial relationships, challenging viewers to reconsider their perceptions of reality. The piece exemplifies his ability to blend art with intricate geometrical designs.