Sasanian Constructions at Bistun: Projects that Never Completed

There are lot of evidences about Sasanian period monuments in Bistoun that according to result of researches, we believe these monuments has builed in late Sasanian period and Specifically during the reign of Khosrow II (590-628 AD). These monuments as “Sasani-Ilkhanid building”, “Farhad-Tarash”, “Pol-e-Khosrow bridge”, and “Pol-e-Bistoun bridge” that we should add three Capitals that has insiced bust of Khosrow II. The important point as results of exploration and studies show, Implement all of these projects stopped suddenly and never completed in Sasanian period. For example, evidence can be cited to show that arches over the openings in “Pol-e-Khosrow” and “Pol-e-Bistoun” bridges Never has been made, Building operations “Farhad-Tarash” is never completed, and the rooms of “Sasani-Ilkhanid building” never has been formed. In this note has tried, by explaining and comparing these monuments and right dating offer for them, several possible reasons for why the proposed monuments will remain incompleted.