The castle rises at the center of the little medieval suburb of Bastia, crowning a hill of 500 meters high, above the town of Licciana Nardi, in the valley of the Taverone river (high Lunigiana). It is located in a strategical position in the valley that in the Middle Age was crossed by an important road, point of forced passage between the regions of Liguria and Tuscany and the Emilia-Romagna. The whole territory and all its castles, as the whole Lunigiana, were subjected to the dominion of the feudal family of the Malaspina, that strengthened this zone to take all the advantages that this important road of communication offered, first of all the imposition of tributes to the travelers.
The battlements don't exist anymore but, as in all the other castles of this area, they had the form of 'tail of swallow' also said 'Ghibelline'. Very interesting are also the loopholes and gunholes opened in the bastionated walls, for their form suited for the use of fire weapons, probably a 16th century's addition. The primitive gate, unique way to access the inner courtyard and the keep that opens itself at a certain height from the ground, has been replaced by a stone stairway, under whose arc are still visible the remnants of its original form