THE SO-CALLED PIOMBINO CASTLE INCLUDES THE CENTRAL CASSERO (QUARTER-DECK), BUILT IN SUCCESSIVE STAGES IN THE 13th AND 14th CENTURIES, AND THE FORTEZZA (FORTRESS) THAT SORROUNDED IT. THE FORTRESS WAS BUILT UNDER COSIMO I DE' MEDICI IN 1552, BY HIS MILITARY ARCHITECT GIOVANNI CAMERINI.
