Panathinaikos F.C. is a Greek professional football club based in Athens, Greece. Founded in 1908, they play in the Super League Greece and are one of the oldest and most successful clubs in Greek football history. They have won 19 Greek championship titles, 16 Greek Cups and in 1971 they reached the European Champion Clubs' Cup final. According to International Federation of Football History & Statistics (IFFHS), Panathinaikos F.C. is the most successful Greek football club for the period of 1 January 1991 to 31 December 2008, holding the 52nd place in IFFHS Club World Ranking for the aforementioned period. Panathinaikos F.C. was the amateur football department of Panathinaikos Athlitikos Omilos multi-sport club, the Pan- Athenian Athletic Club, from which the club's other name, P.A.O., derives. In 1979 the department became professional and independent. They have played their home games in various venues, most notably, Apostolos Nikolaidis Stadium, which is considered their traditional home stadium. They have also played home games at the Athens Olympic Stadium.