Bayer 04 Leverkusen Fußball GmbH, also known as Bayer 04 Leverkusen, Bayer Leverkusen, or simply Bayer, is a professional football club based in Leverkusen, North Rhine-Westphalia, Germany. The club competes in the Bundesliga, the top tier of German football, and plays its home matches at the BayArena
