Formation, Development and Collapse of Ujan Islamic City, According to Comparative Studies on Sources and Archaeological Excavations

Ujan covers about 90 hectare area, where locates 5 Km away from modern Bostan Abad. Earlier construction of the urban center dates to 4-6 AH centuries that coincides to Seljuqs era. It developed during 7 and 8 AH centuries and reached to summit during middle Ilkhanid to Safavid period. It collapsed and destroyed during Qajar period. Here, there is an attempt to study effective elements in formation of Ujan and its consequent function, using descriptive-analytic view and historic research method, based on archaeological-environmental landscape. Finally, it is involved in reasons of collapse of the city. Bibliographic and field studies indicate that construction of the city was for midway positioning. In addition, present paper presents subjects about political and social history, architectural remains, urbanization, cultural remains, and different districts of the city including cemetery and administrative center.