It’s a little room where the inscription “Regina cieli laetare quia meruisti portare” appears, it is an antiphon of the Easter’s period. For many years it was considered the chapel of the first XVIth century (the frescoes are similar to the equilibrist women’ room). Today the students of this room looking the raffiguration at the centre of the ceiling), and they think that it can be the Galeazzo’s alchemic private room, because he was a famous alchemist.