Hirami Ahmet Pasha Mosque - Credit: Wikimedia Commons
Hirami Ahmet Pasha Mosque () is a former Eastern Orthodox church converted into a mosque by the Ottomans. The small church, one among the 36 dedicated to Saint John the Baptist in Constantinople, was part of a monastery bearing the same name.Janin (1953), p. 423. Its full name was Saint John the Forerunner by-the-Dome (, Hagios Ioannis ho Prodromos en tō Trullō). It is the smallest Byzantine church of Constantinople still extant and has never been studied. Read more on Wikipedia
Source: en.wikipedia.org