The Sforza family was the founder of the Principality of Milan, which supported a large number of important Renaissance artists. The castle is the heritage of the family. The castle building has great momentum and a sense of vicissitudes. It is surrounded by high walls with deep ditches outside. Visiting the castle is free. There is a big park outside the castle. There are museums in the castle. It is said that there are works by Leonardo Da Vinci and Michelangelo. Unfortunately, time is too late to visit them.