See, the drawing was of Sforza Castle, and it included depictions of ... different museums—Pinacoteca del Castello Sforzesco, the Museum of the Rondanini Pieta, and the Museum of Ancient Art.

Sources: official websites of the Milan Cathedral, the Sforza Castle, the Teatro alla Scala ... Palace ・Arch of Peace ・Leonardo da Vinci Museum of Science and Technology Milan Cathedral ...