Sforza Castle (or Castello Sforzesco) was built in the 15th century by Francesco Sforza, Duke of Milan, and in the 16th and 17th century it was one of the biggest and most impressive citadels in Europe. Today it includes several museums, including the Museum of Ancient Art, the Museum of Musical Instruments, the Egyptian Museum, the Pinacoteca del Castello Sforzesco, and many more!