2) Borussia Dortmund
The German giants boast a massive membership of over 100,000, and its stadium capacity of over 80,000 standing and seating place host to the clubs incredible supporters. In 1929, the club were bordering bankruptcy, but the clubs supporters ensured this would not happen, by dipping into their own pockets, and ensuring their club stayed afloat. The world famous South Bank stand, holds 24,454 supporters, and is named ‘The Yellow Wall’ and is the heart of Dortmund’s amazing atmosphere.