- Lithography: Escher was a master of lithography, a printmaking technique that involves creating an image on a limestone block. The image is then transferred to paper by running the block through a printing press. Escher used lithography to create most of his prints, including famous works like "Relativity" and "Waterfall."
- Intaglio: Intaglio is a printmaking technique that involves incising an image into a metal plate. The plate is then inked and run through a printing press, which transfers the ink to paper. Escher used intaglio to create some of his prints, including "Convex and Concave" and "Ascending and Descending."
- Woodcuts: Woodcuts are the original form of relief printing, and they involve carving an image into a block of wood. The block is then inked and run through a printing press, which transfers the ink to paper. Escher used woodcuts to create some of his earliest prints, including "House of Stairs" and "Day and Night."