Atik Mustafa Pasha Mosque - Credit: Wikimedia Commons
Atik Mustafa Pasha Mosque (; more commonly known as Hazreti Cabir Camii) is a former Eastern Orthodox church in Istanbul, converted into a mosque by the Ottomans. In Çember Sokak in the neighbourhood of Ayvansaray, in the district of Fatih, Istanbul, it lies just inside the walled city at a short distance from the Golden Horn, at the foot of the sixth hill of Constantinople. Read more on Wikipedia
Source: en.wikipedia.org