It functions as a communicative, cultural, commercial exchange center contacting with neighboring cultures and resembles Anatolia in Caucasus, the Great Khorasan and Mesopotamia.
The relics and excavated properties.
Architectural complexes and excavated properties from Bronze Age comparable with Shahdad, Hesar Tepe in Damghan, Shahr-e Soukhteh, Fars Province, Susa, Marv, Altin Tepe and etc;
The historical period properties comparable with: Nesa, Azerbaijan, Damavand, Susa, India, Greece;
The Islamic period properties comparable with: Neyshabour, Jorjan, Samerah [in Iraq], Susa, southern shores of Amman.