Associazione Calcio Milan, commonly referred to as AC Milan, is an Italian football club and a member of Serie A, Italy's top football league. Founded in 1899, AC Milan is one of Italy's most successful teams with several domestic and international accolades. Its seven UEFA Champion league trophies are the most won by an Italian club. AC Milan is also involved in Italy's fiercest football rivalry, with Internazionale. The two clubs meet twice a year in the Derby Della Madonnina. AC Milan plays its home matches at San Siro.