Sirolo used to be an ancient Byzantine castle. It still preserves a spruce medieval centre with a part of the old town walls, a fortified tower and a pointed arch.
Una comunità semplice e laboriosa fondata sul baratto e sul mutuo soccorso e dominata dall'alto del loro Castello dai Conti Cortesi.
Gothic medieval arch, situated at the bottom of the main course: it was the main entrance door for those coming from Numana.
Embattled keep, part of the city walls.
