The original structure of this mosque is located in the "Na'l Bandan" locality of the city. Most probably, the construction of which coincides with that of the brick minaret of Saljukian period. It was expanded, ornamented and renovated later. The mosque covers an area of 1,600 sq.m. and comprises of a large courtyard, eastern and western porches, nocturnal areas, north and south facing entrances, minarets of the Saljuqian era, epigraphs, cuneiform inscriptions worked on brick and adornments of brick are some of the historical affects noted on the premises. Besides which there is the carved wooden pulpit, and engraved decrees of the Safavid and Afshar eras. The ancient engraved door of the mosque, together with some archaic epigraphs, and endowment documents are currently in the museum. These are the remnants of the Safavid and Qajar period.