Category:Nicaea
Articles relating to Nicaea, an ancient Greek city in northwestern Anatolia and is primarily known as the site of the First and Second Councils of Nicaea (the first and seventh Ecumenical councils in the early history of the Christian Church), the Nicene Creed (which comes from the First Council), and as the capital city of the Empire of Nicaea following the Fourth Crusade in 1204, until the recapture of Constantinople by the Byzantines in 1261.
Category:Ancient Greek archaeological sites in Turkey
Category:Catholic titular sees in Asia
Category:Populated places in Bithynia
Category:Roman towns and cities in Turkey
Category:Wikipedia categories named after populated places in Turkey