The castle dominates the Roman gate towards Forlì, also angled and stellar, it was the customs office after the disarmament of 1772, it has a structure characterized by advanced bodies and star-shaped for defense against cannon shots. It includes the Captain’s Quarter, the crossing tunnel, the Night Guard Corps and the “stopping point”.
It is currently the seat of the Municipal Historical Archive, of the Roman Village and of the Compagnia dei Balestrieri of Terra del Sole, of the “G. Rossini” and the choral group. The Archive of the Province of the Tuscan-Tuscan Province, which is rich in over 2000 files, including the archives of the court of first instance, whose oldest document dates back to 1490, is preserved almost entirely.