Panathinaikos, a prominent Greek football club, has a rich history and numerous accomplishments. Founded in 1908, the club is based in Athens and plays its home matches at the Apostolos Nikolaidis Stadium. Panathinaikos has established itself as one of the most successful clubs in Greek football, winning the Greek Super League 20 times, with their most recent triumph in the 2009-2010 season. The club has also achieved success on the European stage, reaching the final of the European Cup (now UEFA Champions League) in 1971, where they narrowly lost to Ajax. Panathinaikos is affectionately known as "The Greens" due to their green and white team colors. The club has a passionate fan base and enjoys a fierce rivalry with Olympiacos, another top Greek club.