On the panoramic road from Montignoso to Strettoia, we arrive on the top of the hill, to the Aghinolfi Castle. This has area is very ancient, inhabited by the Liguri - Apuani, it played a strategic role, in fact in 1945 it was a nazist stronghold on the Gothic Line; the castle was set free by Americans and the partigiani (local group fighting for the freedom of the city) . The renovation works of 1997, financied by the EU, has restored the castle, making it an important centre of historical interest. Among the castles of Lunigiana, it is one of the most ancient and it was an element of the byzantine times, on the border with the Lombard territories.
The role played by the castle, which took its name by the Lombard king Aghinolfo, is very important in the whole history of the town. The fortress was an important control centre and in particular on the main roads (Via Regia, via Aemili o Scauri, via Francigena).