Bayer 04 Leverkusen (officially Bayer 04 Leverkusen Fußball GmbH) is a German professional football club based in Leverkusen, North Rhine-Westphalia. Competing in the Bundesliga, the club plays its home matches at the 30,210-capacity BayArena. Nicknamed Die Werkself (The Factory XI), they are globally recognized for their exciting brand of football and their historic unbeaten domestic campaign under Xabi Alonso