The art of Ancient Greece is usually divided into four stylistic periods - Geometric, Archaic, Classical, and Hellenistic. The five main forms of Greek art are architecture, sculpture, painting, pottery making, and jewelry making. Their sculpture focused on the human dimension and figure, striving for perfect proportions, and they believed the nude human form was naturally beautiful without needing coverings. Their architecture is best known from temples and open-air theaters, such as the famous Temple of Zeus.