Tekyeh & Hussainiya
Tekyeh and Hussainiya are two religious units were always prominent as well, especially during Muharram, Safar and Ramadan months to hold occasional mourning ceremonies
Iran after the Advent of Islam
It is a period of time began with the Arabs’ invasion of the country in 642 B.C. and the Iranians gradually converted to Islam; the period which has been continuing up to the present.