Shushtar congregation is located on the west side of Shushtar and its original building is one of the works of early centuries of Islam. Building of this mosque has undergone a fundamental change in later centuries especially in Safavid era.
According to the available evidences and written sources, original building of this mosque consisted of a nave toward qible and maybe a porch in other sides of the apron.
Due to the Shushtary biographical text, nave of mosque had been constructed by wood; but in Safavid era, nave with brick arches was erected on the stone columns because of dead wooden ones.