Borussia Dortmund is one of Germany's most iconic football clubs, based in the industrial city of Dortmund and competing in the Bundesliga. Their home is the incredible Signal Iduna Park, famed for its Yellow Wall, the largest standing terrace in European football. Founded in 1909, the club's colours are black and yellow. Dortmund's history features periods of brilliant success, including their 1997 UEFA Champions League triumph and back-to-back Bundesliga titles under Jürgen Klopp in 2011 and 2012, playing a thrilling, high-intensity style. The modern era sees Dortmund as the primary challenger to Bayern Munich's dominance, consistently finishing in the top four and competing in the Champions League. They are renowned for their exceptional youth development, electric atmosphere, and status as a club truly owned by its members and supporters.