It is likely that an initial series of defensive structures such as a small motte-and-bailey fort with a moat and a palisade which had preceded the construction of a stone tower or keep, which was further expanded during the 13th century, with the addition of a mansion and a two-storey building.

During the same period there was certainly a hamlet outside of the palisade, also outfitted with a defensive barrier and composed of houses mandatorily built in masonry, an enforcement given to the residents together with the duty of defending the castle in case of attack.

Under the Republic of Venice, the castle had further fortification works to make it more appropriate to the Renaissance warfare, which incorporated the use of firearms.

The castle was damaged during the bombings in the First World War, and underwent a philological restoration between 1934 and 1937 by the architect Ferdinando Forlati, with the help of military engineers and the supervision of the Belle Arti of Trieste.

It was decided to return to a medieval look of the castle and discard the white plastering that the building had acquired during the Renaissance.