At the southern end of Arnasco, the Palazzo Cazzulini forms part of what is now known as Villa Bezzo. The structure dates in its origins to the 13th or 14th century, when the Cazulini family of Albenga held their half of the feudal rights over the commune, though it has been altered and added to over subsequent centuries in ways typical of Ligurian rural palazzi.
The building is private and not open to visitors, but the exterior is visible from the road and gives a clear sense of how the village's medieval power was concentrated in a single fortified compound below the valley side. It makes a useful bookend when walking the village: castle ruins above in Chiesa, palace facade below in Bezzo.