Columns also provided a place to add artwork to. The column capitals became a prime spot for reliefs of more stories, but the storytelling on these was often strange. For instance, a story is shown of a cat feigning death and being carried off by mice only before springing back to action and defeating the mice (kinda random). This could be a proverb to represent the return of Christ, or it could just be Medieval humor.
Paintings were made on church walls, too. At San Clemente in Tahull, Spain, a painting of Christ is drawn in a sphere, representing the universe that He controls. It uses patterns and bold colors to emphasize its effect.