Chogha Zanbil or Ziggurat Chogha Zanbil is an ancient Elamite complex near Shush. It is one of the few existent ziggurats outside Mesopotamia. It lies approximately 30 km south-east of Susa and 80 km north of Ahvaz. The main building materials in Chogha Zanbil were mud bricks and occasionally baked bricks. The monuments were decorated with glazed baked bricks, gypsum and ornaments of faïence and glass. Ornamenting the most important buildings were thousands of baked bricks bearing inscriptions with Elamite cuneiform characters were all inscribed by hand. Glazed terracotta statues such as bulls and winged griffins guarded the entrances to the ziggurat. Near the temples of Kiririsha and Hishmitik-Ruhuratir, kilns were found that were probably used for the production of baked bricks and decorative materials. It is believed that the ziggurat was built in two stages. It took its multi-layered form in the second phase.
The ziggurat is considered to be the best preserved example of the stepped pyramidal monument by UNESCO. In 1979, Chogha Zanbil became the first Iranian site to be inscribed on the UNESCO World Heritage List. Wikipedia