AC Milan is a professional Italian football club based in Milan, founded in 1899 and nicknamed the "Rossoneri" (Red and Blacks) for its team colors. It is one of the world's most successful clubs, with numerous domestic and international titles, including 19 Serie A championships, 7 European Cups/Champions Leagues, and plays its home games at the San Siro stadium. The club has a fierce rivalry with fellow Milan-based club Inter Milan, with their matches being known as the "Derby della Madonnina".