This relic of the 13th century AH. is located in Mostafa Khomeini Avenue. The founders of this mosque were Haj Mirza Hassan Khan Sepahsalar (Chancellor of Naseradin Shah Qajar) and his brother Moshirodoleh.
The school is 62m. in length and 61 m. in width and has 60 chambers. The dome is 37 m. high. The structure comprises of chambers, porticoes, corridors, a two storeyed building, a large dome, minarets, palace for nocturnal prayers (Shabestan), a reputable library and a gateway.