The Center of Mosque Studies - Koucheh Mir Ja'ame (cathedral) Mosque is located in Mir district and has a elevated gateway, domed shabestan and a mehrab which is designed with plaster work. The exterior dimension of the mosque is 6.78m*7.50m. The mosque had been vaster in past which some of its parts are destructed during the time.
The width of the gateway is 107cm and there are two designed awnings in both sides of this gateway. The ceiling of the gateway was designed with brick works. The entrance gate of the shabestan is located in the left side of corridor with 6m length and 1.7m width. The shabestan is square shaped and the length of each side is around 6m. The ceiling cover material is composed of nine small domes which are installed on four cube columns. The diagonal of each column is 3.17m.