Where did the first church council meet?

The First Ecumenical Council was the Council of Jerusalem recorded in the book of Acts, however, the First Council of Nicaea is most commonly called "the first":

I. FIRST COUNCIL OF NICAEA

Year: 325

Summary: The Council of Nicaea lasted two months and twelve days. Three hundred and eighteen bishops were present. Hosius, Bishop of Cordova, assisted as legate of Pope Sylvester. The Emperor Constantine was also present. To this council we owe the Nicene Creed, defining against Arius the true Divinity of the Son of God (homoousiOS), and the fixing of the date for keeping Easter (against the Quartodecimans).