Takhte Jamshid is the most glorious ancient complex of Iran and a reminder of ancient world civilization. This palace was erected by Darius 1 at 518 B.C. in the foot of Rahmat mountain. This stone complex with 135000 meters square at its base contained four palaces, one hall, pillars, stairs, embossed figures and stone tombs. The greatest and the most important building of this complex is the Apadana palace or the Darius palace which is one of the masterpieces of Achaemenid era. Takhte Jamshid was used for the residence of kings of Achaemenid dynasty for 200 years until Alexander's attack in 330 B.C.