In the 1320s Giotto painted two large altarpieces. The first was the Stefaneschi Triptych, which is now in the Vatican Museum. (A triptych is a painting on three panels. Some triptychs are very small and can be folded up and carried around, but this triptych is a large altarpiece.) The second altarpiece is called the Baroncelli Polyptych. (A polyptych has lots of parts, big and small. They are usually made as great big altarpieces for important churches, and have big, carved gold frames.)