The castle is in fact made by two distinct edifices: the Torrione ("Big Tower"), which was built by the Lombards starting from 871, and the Palazzo dei Governatori, built by the Popes from 1320.
the castle is in fact made by two distinct edifices the torrione ("big tower") which was built by the lombards starting from 871 and the palazzo dei governatori built by the popes from 1320