It has two entrance doors in degradation with archivolts and historical tympanums. An hexagonal figure is included in ornaments of the tympanums on the entrance door. The Classicism period saw porches replaced by porticos with tympanums. The portal tympanums and the internal frieze were executed by the sculptor Robert Coin. Scamozzi's design for the upper floor included elaborate carvings and reclining figures atop the tympanums. All species have visible tympanums, maxillary and vomerine teeth, powerful legs, and webbed feet. Two molded semi-circular arches with tympanums decorated with trefoils stand above the doors. Some of the choir chapel windows have used fragments of earlier windows in their tympanums. Tympanums on the front legs pick up the vibrations created by the chirps. The north, south, and west tympanums are painted according to a calligraphic and floral scheme.