The San Mamés Stadium was a football stadium in Bilbao, Biscay, Spain. The stadium was the home of Athletic Bilbao, known as Los Leones de San Mamés-Bilboko lehoiak (The Lions of San Mamés). They are known as Los Leones because their stadium was built near a church called San Mamés (Saint Mammes). Mammes was an early Christian, born in A.D. 259, who was thrown to the lions by the Romans. Wikipedia