Persepolis-Takhte Djamshid (Fars Province, Iran, (UNESCO World Heritage Site), Apadana Palace, audience hall, (Achaemenid Empire, 5th Century BC; started under Darius I, completed under Xerxes I).-View of the Apadana Palace (started under Darius I, 522-486 BC, completed under Xerxes I). Photo, May 2009.