Turkey
تركيا
Constantinople, Tur Abdin and Antioch
The great ecumenical councils met on the land of modern Turkey. It holds Constantinople, seat of the Ecumenical Patriarchate; Antioch, where the disciples were first called Christians; and Tur Abdin, the heartland of the Syriac world. A century ago Christians were a fifth of Anatolia's population; today only small communities remain.
Christian population
About 100,000–170,000
Estimates; Christians were some 20–25% of Anatolia's population in 1914, reduced to under 0.2% by the genocides, the population exchange and emigration.
Languages of liturgy and life
Greek among the Rum, Syriac and Turoyo in Tur Abdin, Armenian in Istanbul, alongside Turkish — and Arabic among the Orthodox of Antakya and İskenderun.
Churches and denominations
Ecumenical Patriarchate of Constantinople
البطريركية المسكونية في القسطنطينية
First in honour among the Orthodox churches, seated at the Phanar in Istanbul — though its local flock now numbers only a few thousand.
Armenian Patriarchate of Constantinople
البطريركية الأرمنية في إستنبول
The largest Christian community in Turkey today, with churches, schools and a hospital in Istanbul.
Syriac Orthodox Church
الكنيسة السريانية الأرثوذكسية
Tur Abdin is its historic heartland, with monasteries that have not ceased working since the fourth century.
Antiochian Greek Orthodox
الروم الأرثوذكس في أنطاكية
An Arabic-speaking community in Antakya and İskenderun, under the Patriarchate of Antioch — whose seat is now in Damascus.
Chaldean & Syriac Catholic
الكلدان والسريان الكاثوليك
Small communities in Istanbul, Diyarbakır and Mardin.
Latin and Protestant
اللاتين والإنجيليون
Small parishes, mostly serving foreign residents and migrants.
Historical milestones
c. 47–57 AD
Paul's journeys in Asia Minor, and the rise of the churches at Ephesus, Galatia and Colossae that his letters address.
325
The Council of Nicaea at İznik: the first ecumenical council, where the creed was framed.
381, 431 and 451
The councils of Constantinople, Ephesus and Chalcedon (Kadıköy) — three of the most consequential councils, all on Anatolian soil.
4th century
The three Cappadocian Fathers — Basil the Great, Gregory of Nazianzus and Gregory of Nyssa — and the founding of Mor Gabriel monastery in 397.
537
Hagia Sophia is consecrated, and remains the largest church in Christendom for close to a thousand years.
1054
The Great Schism between Rome and Constantinople, the dividing line between Catholicism and Orthodoxy.
1453
The conquest of Constantinople; the Ecumenical Patriarchate continues in the city under the millet system.
1915–1923
The Armenian genocide, the Syriac Sayfo and the massacres of Greeks: the end of the Christian presence across most of Anatolia.
1923
The population exchange between Turkey and Greece moves hundreds of thousands of Greek Orthodox to Greece.
1955
The Istanbul pogrom against the Rum, and the emigration that followed, emptying the city's oldest community.
1971
The Halki theological seminary, which trained the Orthodox clergy, is closed — and remains closed.
Places and heritage sites

Hagia Sophia
آيا صوفيا
Istanbul
The cathedral of Holy Wisdom, and the largest church in Christendom from 537 to 1453.
The Phanar
الفنار
Istanbul
Seat of the Ecumenical Patriarchate and the Church of St. George.

Mor Gabriel Monastery
دير مار جبرائيل
Tur Abdin
Founded in 397, and reckoned among the oldest working monasteries in the world.
Deyrulzafaran (Mor Hananyo)
دير الزعفران (مار حنانيا)
Mardin
Seat of the Syriac Orthodox patriarchate for centuries, until it moved to Damascus.

Antioch (Antakya)
أنطاكية
Hatay
The city where the disciples were first called Christians; home to the Church of St. Peter, cut into the mountainside.

Cappadocia
كبادوكيا
Nevşehir
Rock-cut churches and monastic dwellings with their wall paintings, on the UNESCO list.

Ephesus
أفسس
İzmir
One of Paul's churches, the site of the Council of 431, and by tradition the house of Mary.
On the map
References
General further reading, not citations to specific pages.
Further reading
- Aziz S. Atiya. A History of Eastern Christianity. Methuen, 1968
- Sebastian P. Brock. An Introduction to Syriac Studies. Gorgias Press, 2006
- Jean-Pierre Valognes. Vie et mort des chrétiens d'Orient. Fayard, 1994
- Anthony O'Mahony and Emma Loosley (eds.). Eastern Christianity in the Modern Middle East. Routledge, 2010
- UNESCO World Heritage Centre. UNESCO World Heritage List. whc.unesco.org
- Pew Research Center. Religious composition reports for the Middle East and North Africa. www.pewresearch.org