What type of art does M.C. Escher make?

M.C. Escher is renowned for his intricate and mathematically inspired artworks that explore concepts of perspective, symmetry, and infinity. His works often feature impossible constructions, tessellations, and optical illusions, blending elements of realism with abstract forms. Escher's unique style challenges viewers' perceptions of space and reality, making him a pivotal figure in the realm of graphic art.