Chogha Zanbil is an ancient Elamite Complex in the Khuzestan province of Iran. It is one of the few existent ziggurats outside of Mesopotamia. It lies approximately 42 Km South West of Dezful, 30 Km West of Susa and 80 Km north of Ahvaz Iran. It was built about 1250 BC by the King Untash Napirisha. In 1979, Chogha Zanbil became the first Iranian site to be inscribed on the UNESCO World Heritage List.