But before reaching the square we suggest that you take a brief detour into Via Masianello, to the secondary entrance of the Basilica of S. Martino, to admire the Palazzo Stabile. The façade was inspired by a theatre curtain and between the two arcades we can see the coat of arms of the Stabile family.  Going down Via Arco Cairoli, you arrive at an alleyway which seems to be a dead end but which hides the Strettoia, the narrowest street in the town. This leads into Via Pisterola, but no more than one person at a time can pass through it. These tight alleyways are typical defensive stratagems in a medieval castle and of the defensive walls, usually with a straight drop, down which boiling oil would be poured or ashes thrown over the attacking enemy.