The
Church of the Holy Apostles (,
Agioi Apostoloi; ), also known as the
Imperial Polyándreion (imperial cemetery), was an
Eastern Orthodox church in
Constantinople, capital of the
Eastern Roman Empire. The first structure dates to the 4th century, though future emperors would add to and improve on the space. It was second in size and importance only to the
Hagia Sophia among the great churches of the capital. When
Constantinople fell to the
Ottomans in 1453, the Holy Apostles briefly became the seat of the
Ecumenical Patriarch of the
Greek Orthodox Church. Three years later the edifice, which was in a dilapidated state, was abandoned by the Patriarch, and in 1461 it was demolished by the Ottomans to make way for the
Fatih Mosque.