The religious landscape of Tehran Province is diverse, though predominantly shaped by Twelver Shia Islam.
* **Islamic Sites:** The Grand Mosallah of Tehran (a massive architectural complex used for congregational prayers and major exhibitions), Imamzadeh Saleh in Tajrish (a beautiful shrine with striking tile work), and the Shah Abdol-Azim Shrine in the ancient city of Ray, which is a major pilgrimage site. * **Religious Minorities:** Tehran is home to Iran’s largest populations of religious minorities, protected under the constitution. * *Christianity:* Saint Sarkis Cathedral serves the Armenian Apostolic community. * *Judaism:* The Yusef Abad Synagogue and Abrishami Synagogue serve the vibrant, historic Iranian Jewish community. * *Zoroastrianism:* The Adrian Fire Temple is a central place of worship for followers of Iran's ancient pre-Islamic faith.
