Located at the western end of the Keep enclosure.
The Cassero Tower
At the western end of the keep enclosure is a quadrangular tower jutting over the open space, which, however, in ancient times constituted the highest part of the castle.
In fact, the tower takes on the typical shape of the arrow-shaped ramparts that became characteristic of Renaissance architecture.
It is yet to be assessed whether this tower, rather imposing and guarding theaccess to the fortified area, belongs to the late medieval phase, as seems to be indicated by the type of texture that provides squared ashlars only in the angles (probably reused) while the rest of the face consists of unworked or roughly hewn stones bound with lime mortar or whether it is instead already part of the entire Medici restoration and reconstruction work.
The restorations performed do not allow us to assess with certainty the type of mortar used.
The tower has a distinctive shape, with a point outward, and is still clearly visible in the 1823-1835 cadastre.
It rests directly on the rocky paleosol, an element that helps to strengthen its stability and ensure its strategic defensive role within the fortification.
Its elevated position would have allowed ample visual control over the surrounding area, important both for defense and for monitoring access to the castle.
