Several times restored, the mill is probably the only remaining artifact of the ancient defensive line to protect Monza, connected to the pre-existences of the nearby Villa Mirabello.
In fact, from the nineteenth-century drawings it is clear that the building designed by Tazzini was almost certainly an adaptation of a pre-existing building, which already contained the belvedere tower, intentionally left incomplete, according to the romantic taste of the "ruins".
The architectural composition of the complex is dominated by the southern facade, which joins the two wings with an arcade that conceals the wheels of the millstones operated by the passage of the water channel.
The classical entablature on paired columns is surmounted by a pediment with a broken tympanum containing a window open in the central element only.
The eclectic composition of the facade is completed by two circular windows with exposed brick frames.