Picture moldings are an architectural detail made popular by Victorian homeowners, who presumably didn't want to punch holes in their walls. To fashion a wall worthy of a gallery, team the moldings with decorative hangers.
Take a cue from an artist who has an ever-evolving collection of paintings. Picture moldings and decorative picture hangers allow you to hang artwork anywhere, anytime, without nail holes in the walls.
See several examples of decorative picture hangers on the following page.