The Zincirli Kuyu Camii is a little mosque, built about 1500 by Atik Ali Paşa who also built a better known one near the column of Constantine. That is one of my favorites, but I do not know where I put my pictures. Probably in some of my “walks”, I’ll locate them sometime. As for the Zincirli, it is of a type one sees more often in Bursa, that is: equal domes in two rows of three, supported by two massive rectangular columns. There was a Koran school in a corner, some pupils were reading in the window bays. The Strolling through Istanbul guidebook calls it rather heavy and oppressive. In 2015 I found it pleasantly light, probably the result of a recent restoration.
In the Wikipedia I found there are only two mosques of this "multi domed" type in town, and that the mosque has several other names: Vasat Atik Ali Pasha Mosque (Turkish: Vasat Atik Ali Paşa Camii), also known as Zincirlikuyu Mosque (Turkish: Zincirlikuyu Camii) or Karagümrük Mosque, is an Ottoman mosque located in the Karagümrük neighbourhood of the Fatih district in Istanbul, Turkey, on Fevzipaşa Street. Sultan Bayezid II's grand vizier Hadım Atik Ali Pasha, after whom the mosque is named, ordered its construction in 1502, and it was completed in 1512, one year after the grand vizier's death.
The mosque is one of only two mosques in Istanbul with multiple domes, the other being Piyale Pasha Mosque, both having six domes. The mosque was known as Zincirlikuyu Mosque for a long time because of its location next to a well known as Zincirlikuyu (zincirli "chained", kuyu "well").