Imam Mosque (Masjid-e Emam, formerly Masjid-e Shah or Sultani Mosque) located at the end of Naser Khosro Ave. near the Tehran Grand Bazaar. The Shah or Sultani Mosque dates back to the reign of Fath Ali Shah Qajar and during the reign of Naseredin Shah the two current minarets were added to the structure. This mosque proves to be a great piece of architecture and beauty due its vast courtyard, beautiful Shabestans (or nocturnal areas), the giant tile worked dome and interesting arches and entrances. read more on itto.org . read more on itto.org | Read more at itto.org: https://www.itto.org/iran/attraction/imam-mosque-masjid-shah-tehran/