An ancient city in Asia Minor, on the site of modern Iznik, which was important in Roman and Byzantine times. It was the site of two ecumenical councils of the early Christian Church (in 325 and 787). The first, the Council of Nicaea in 325, condemned Arianism and produced the Nicene Creed. The second, in 787, condemned the iconoclasts.
Subjects: Medieval and Renaissance History (500 to 1500).