From CojsWiki
The glory of Susa: glazed brick wall decorations from the palace of Darius the Great, c. 500 BCE. Griffons under the winged disc of Ahura Mazda, the god of Wisdom. Lower: The frieze of archers of the Persian royal guard, the Immortals. A splendid archaic world swept away by Alexander.
Wood, Michael, In the Footsteps of Alexander the Great: A Journey from Greece to Asia. London: BBC Worldwide Ltd., 2001.