From the entrance door of the circular inner courtyard, which mirrors and follows the entrance of the House, one can appreciate the volumetric complexity created by the mysterious architect, perhaps Mantegna himself, or an architect following his instructions. The insertion of the cylindrical shape makes visible the three French windows on the ground floor, but also determines a double section on the second floor that overlooks the courtyard. The windows in the curved part are on the floor above; the smaller ones on the flat part of the wall give onto a small attic on the floor above. The rhythm of the interior facade is set by a geometrical illusionism where full and the empty spaces are perfectly compensated.