- The city was inhabited by Celtic groups as early as 400 B.C. until the Romans took over in 222 B.C.
- Mozart composed three operas in Milan.
- In 1922, Mussolini started his March on Rome from Milan.
- The Duomo is the second largest church in Italy and the third largest church in the world.
- The Italian stock exchange is based in Milan.
- Fiera Milano, where Vitrum is taking place, is the largest exhibition complex in the world.