In piazzale Giovanni Paolo II, in front of the Sanctuary of the Blessed Virgin of the Castle, a free outdoor archaeological area is visible, preserving the ruins of an underground room of the lost Fiorano Castle that once stood at the summit of the hill, destroyed in the seventeenth century in order to build the Sanctuary.
The ancient castle, a 12th century fort abandoned in 1510, is still visible in the sixteenth century frescoes in the Room of Views of Spezzano Castle.