Folgore's Mansion in Milan.
Milan is the city in Italy where Parco Folgore lives. Important events in the Clear Note Arc take place here, most notably the burning of Kanchome and Purio's spellbooks. It is also seen breifly when Kanchome is kidnapped by the circus. Since it was Mir's chosen hiding place during the ten months Clear Note was regenerating, it is likely she also lives there.