nicaea

an ancient city in Bithynia; founded in the 4th century BC and flourished under the Romans; the Nicene Creed was adopted there in 325

the seventh ecumenical council in 787 which refuted iconoclasm and regulated the veneration of holy images

the first ecumenical council in 325 which produced the wording of the Nicene Creed and condemned the heresy of Arianism