The first seven ecumenical councils were all held in Asia Minor and specifically in today’s cities of İznik, Bursa, İstanbul, and Selcuk, İzmir. The seven councils, held between AD 325 and 787, are known primarily for their consideration of doctrinal conflicts. They also ruled on practical matters which were set down in canons. A trip covering the historical sites and magnificent monuments in İznik (Nicaea), İstanbul, and İzmir will take you to the ancient settings of these seven councils. First Seven Ecumenical Councils First Council of Nicaea (AD 325), İznik, Bursa First Council of Constantinople (AD 381), İstanbul First Council of Ephesos (AD 431), Selcuk, İzmir Council of Chalcedon (AD 451), Kadıköy, İstanbul Second Council of Constantinople (AD 553), İstanbul Third Council of Constantinople (AD 680-681), İstanbul Second Council of Nicaea (AD 787), İznik, Bursa
