Church of Constantinople

The Church of Constantinople, also known as the Ecumenical Patriarchate of Constantinople, is one of the oldest and most prominent Eastern Orthodox Christian institutions. Established in the city of Byzantium (later called Constantinople, now Istanbul) in the 4th century, it serves as a leading authority for Orthodox Christians around the world. The Patriarch of Constantinople is considered "first among equals" among the Orthodox bishops, playing a crucial role in the unity and governance of the Orthodox Church, and is influential in ecumenical dialogues with other Christian denominations. Its historical significance is rooted in both religious and cultural heritage.