The North Tower and the West Tower
The Castle Towers
Two square-shaped towers in the outer wall circuit differ from the others, which are semicircular in shape.
The structure of the north tower is better preserved, as is the wall circuit, and seems little affected by the heavy Medici restoration and reconstruction work. Here we can appreciate a different type of wall texture from the rest of the fortifications visible today.
As with the arrow tower of the keep, the angles are made with squared ashlars, a technique that promotes the strength of the construction, while the interior is made with the same technique as the walls and fortress on the north side.
This suggests to us that the two quadrangular towers were built within an almost unified construction project that also included the city wall.
It is therefore believed that the late medieval castle wall was equipped exclusively with square towers, a feature that distinguishes this fortification from other Renaissance and later ones where we have a strong presence of circular towers, and that it had more or less the same extent as the Renaissance circuit.
We note that the north tower has been partly repurposed by smoothing the corners, while the west tower is still well preserved.
