1. Fußball-Club Koln 01/07 e. V., commonly known as simply FC Koln or FC Cologne in English, is a German professional football club based in Cologne in North Rhine-Westphalia. It was formed in 1948 as a merger of the clubs Kolner Ballspiel-Club 1901 and SpVgg Sülz 07. Koln competes in the Bundesliga after promotion in 2018–19 following relegation to 2. Bundesliga the previous season. The team are two-time top-flight champions, winning the Bundesliga in 1964 and 1978. The team plays its home matches at Rheinenergiestadion.