Centered in Persia (modern Iran), the Sasanian dynasty (224–651 CE) controlled territory from the Euphrates in the west to the Oxus in the east and the Persian Gulf in the south. The dynasty aimed to restore the legacy of the Achaemenid Empire by expanding and consolidating its dominions. With their capital at Ctesiphon, the Sasanians re-established Persia as a major power in Late Antiquity, rivalling and frequently opposing the Roman Empire and later the  Byzantine Empire. Sasanian achievements in the arts included architecture, sculpture, metalwork, and textiles. Web resources here and here.

Head of a King. Gilt silver. Sasanian. Fourth c. CE. Metropolitan Museum of Art, New York.