Football Club Internazionale Milano S.p.A., commonly referred to as Internazionale or simply Inter – outside Italy, the club is often called Inter Milan – is a professional Italian soccer club based in Milan, Lombardy. Founded on 9 March 1908 in the back room of the L’Orologiaio (the clock) restaurant in Milan, under the impetus of dissident members of the AC Milan, the club has spent its entire history, in the top flight First Division (known as Serie A since 1929).

Inter has won 30 domestic trophies, including the league eighteen times, the Coppa Italia seven and the Supercoppa Italiana five. From 2006 to 2010 the club won five successive league titles, equalling the all-time record. Inter have won the Champions League three times; two back-to-back in 1964 and 1965 and then another in 2010. The last completed an unprecedented Italian treble with the Coppa Italia and the Scudetto. The club has also won three UEFA Cups, two Intercontinental Cups and one FIFA Club World Cup.

Inter’s home games are played at San Siro, also known as the Stadio Giuseppe Meazza. The stadium, which is shared with Milan, is the largest in Italian soccer, with a total capacity of 80,018.AC Milan are considered their biggest rivals, and matches between the two teams are called Derby della Madonnina, which is one of the most followed derbies in football. As of 2010, Inter is the second most supported team in Italy, and the eighth most supported team in Europe.

source: Wiki