Borussia Dortmund is a German sports club based in Dortmund. Borussia Dortmund plays in the Bundesliga, the top tier of the German football league system. Dortmund is one of the most successful clubs in German football history. Borussia Dortmund was founded in 1909 by 17 football players from Dortmund. Borussia Dortmund have won 8 German football championships, 3 German Cups, 4 German Supercups, 1 UEFA Champions League, 1 UEFA Cup Winners’ Cup, and 1 Intercontinental Cup.