This 12th-century mosque is still in use today. It was first built under Alaoddoleh Garshasb of the Al-e Bouyeh dynasty. The mosque was largely rebuilt between 1324 and 1365, and is one of the outstanding 14th century buildings of Iran.
According to the historians, the mosque was constructed in the site of the Sassanid fire temple and Ala'oddoleh Garshasb commenced building the charming mosque. The previous mosque was constructed by order of Ala'oddoleh Kalanjar in 6th century A.H., however the main construction of the present building was done by order of "Seyyed Rokn Al-din Mohammad QAZI".
