Founded by Darius I in 518 B.C., Persepolis was the capital of the Achaemenid Empire. It was built on an immense half-artificial, half-natural terrace, where the king of kings created an impressive palace complex inspired by Mesopotamian models. The importance and quality of the monumental ruins make it a unique archaeological site.
Persepolis is one of the three properties included in the World Heritage List in 1979, belonging to the Achaemanid dynasty and is the most complete architectural form and city planning of this period. This property had been not only a political center but also a religious one. Moreover, the existence of the sacred mount of Mehr (Rahmat) in the neighborhood of Persepolis has been religiously paid attention to from the pre-historic to the present time. It has been recently known that this mount as well as the Royal mausoleums in Naghsh-e Rajab and the city of Estakhr have been both the entry gate of the city of Parsa and the portal of the water supply system. The above-mentioned properties and other relevant buildings created an integrated structure that with disregarding them, Persepolis cannot be defined completely. This ensemble has been regarded as the heart of the Iranian civilization in that period. The Iranian identity is still known and integrated with this ensemble. Some of the creative elements of architecture and city planning of the Achaemenid can be seen today. At the moment, only the Persepolis platform has been included in the World Heritage List and it needs that the entire ensemble to be included in the List in order complete the whole concept of the property.