Ecumenical Patriarch of Constantinople, also known as St.George Church, is among the holiest Greek Ortodox churchs in the world with its 300 million followers.
The Greek Orthodox Patriarchate Istanbul has been the spiritual center of the Greek Orthodox world since around 1600. Officially the seat of the Ecumenical Patriarchate of Constantinople, it is known locally as the Fener Greek Patriarch, it could be considered the Vatican of Eastern Orthodox church, and the 18th century Church of St. George, Istanbul, which stands in the grounds of it, attracts coachloads of pilgrims from Greece for Sunday mass, particularly at Easter time.
The church is open daily from 9am-5:30pm. There is no Greek Orthodox Church ticket price, but donations are welcome.