This is a museum converted from the Sforza family castle, which exhibits works of art (sculptures, paintings, murals, stone tablets, etc.), furniture, musical instruments, weapons and porcelain. The castle is the style of the Renaissance in the Middle Ages. Its tall and thick walls, narrow stairs, forcing patio, spacious and tall rooms and maze-like paths reveal the solemn and solemn atmosphere of the aristocracy at that time. Most of the venues are free to visit, and some special exhibitions require a fee.