The club founded in 1948. It is a German association football club based in Cologne. 1. FC Koln became the fourth largest club in Germany, with 78,500 members. In 1977-78, FC Koln enjoyed its most successful season, winning the Bundesliga title, its third national title overall, and retaining the DFB-Pokal. This makes Koln one of only four clubs to have won the double in the Bundesliga era.