Since the Church of Hagia Eirene stood within the enclosure of the Saray, and next to the barracks of the Janissaries, it served as an arsenal. In 1846 it became a Museum of Antiquities and in 1874 a Military Museum.
Topkapi Palace
This is the Church of Hagia Eirene in the First Courtyard of Topkapi Palace. This Byzantine church was never converted into a mosque.