A view of the room, restricted to public, where sketches by mannerist painter Simone Peterzano are preserved in the Sforza Castle, in Milan, Friday, July 6, 2012. (AP Photo/Luca Bruno)

A view of the room, restricted to public, where sketches by mannerist painter Simone Peterzano are preserved in the Sforza Castle, in Milan, Friday, July 6, 2012. (AP Photo/Luca Bruno)