Athletic Club Bilbao, also commonly known as Athletic Bilbao, is a professional football club, based in Bilbao, Basque Country, Spain. They are known as Los Leones because their stadium was built near a church called San Mamés. Arena/Stadium: San Mamés Stadium Manager: José Ángel Ziganda Location: Bilbao, Spain Rivals: Real Madrid C.F., Real Sociedad Leagues: La Liga, UEFA Europa League, Copa del Rey