The only Qajar mosque in Tehran Bazaar

Imam Mosque (historically known as Masjid-e Shah or the Royal Mosque), which is the only Qajar mosque of Tehran Bazaar constructed by Fath Ali Shah Qajar in about 1809 in line with his efforts to embellish the newly founded capital, and completed in 1849. It stands at the northern entrance to the bazaar not far from the Golestan Palace. Two side entrances of the mosque lead directly into the bazaar.

The southern Ivan opens onto the prayer hall. The mosque has the usual four Ivans, on each of the four sides of a single-story arcaded court, decorated with early 19th-century haft rang tiles. The turquoise and white dome of the sanctuary chamber beyond the south Ivan is crowned by a small gilded cupola seen here peeping over the Ivan. At the pool in the center of the court - a feature of nearly all mosques - the faithful perform their ritual ablutions before each prayer.