Ecumenical Patriarchate of Constantinople
Be a center par excellence of the life of the entire Orthodox world emanates from its centuries-old ministry in the witness, protection and outreach of the Orthodox faith.
The title "Ecumenical Patriarch" dates from the sixth century and belongs exclusively to the Archbishop of Constantinople. But his role was defined as early as the 4th century. At the 4th Ecumenical Council of Chalcedon (451), the Archbishop of Constantinople was given "equal privileges" to the Bishop of Rome.