The entrance presents a spacious and majestic façade terraced and equipped with balustrades; the center of the palace is a large quadrangle of which there are two gateways which allowed traffic to pass through; this thoroughfare was once called the Strada delle Calabrie or Road of Calabria.
On the left side of the courtyard of the palace is the barracks of the Royal Guards (Caserma delle Guardie Reali) and the Palatine Chapel (Cappella Palatina of 1749), while a majestic salon (1741) leads from the vestibule to the first floor, where the apartment of Caroline Bonaparte is.