AEK F.C, the Athletic Union of Constantinople, is a Greek association football club based in the city of Athens, Greece. Established in Athens on 13 April 1924 by Greek refugees from Constantinople (now Istanbul) in the wake of the Greco-Turkish War, AEK has grown to become one of the most successful clubs in Greek football, winning 29 national titles (including 11 Championships, 13 Greek Cups, 1 League Cup, 1 Pre-1991 Mediterranean Games Cup and 3 Super Cups) providing the Greek National Football Team with many of its star players, and continuously appearing in European (UEFA Champions League and UEFA Cup) competitions, having participated in the semi-finals of the UEFA Cup in 1977. AEK is also a member of the European Club Association The club currently competes in the Super League Greece.