Stadio San Siro officially opened on 19 September 1926 with a friendly between Milan and Inter (3-6). The stadium initially consisted of four separate stands and could hold 35,000 spectators.
San Siro was first owned by AC Milan, but was sold to the city of Milan in 1935, who were soon forced too enlarge the stadium due to the club’s increasing popularity.

San Siro got further expanded in 1955 when a second tier got built on top of the first one, which resulted in a capacity of about 85,000 places.

The stadium got further refurbished in later years, and capacity reduced slightly due to UEFA safety requirements. In 2001, it hosted the Champions League final between Bayern München and Valencia (1-1) and in 2016 the final between Real Madrid and Atletico Madrid (1-1).