The position is strategic, because from it the entire area is visually controlled. The fortress has a maximum length of 120m, width of 80m and was built by the Venetians to ensure their sovereignty over the local population. Its name probably comes from the Italian fortresses of the same name.

It had two entrances from the south and the west side, which was the weakest point of the fortress. Inside it were the chapel of Ai George, a vaulted two-bay tank and other buildings. It was fortified with several ramparts and was used as a refuge for the conquerors.

Monte Forte in the Revolution of Agios Stefanos (1211) was occupied by the rebels, but only for a short time. During the Skordylida-Melissina revolution (1128-1236) the fortress was recaptured by the rebels, but Duke Gradonikos managed to suppress the movement. His fate was similar during the revolution of Alexios Kallergis (1262).

In the earthquake of 1303 it was destroyed, but rebuilt in the 14th century. Since then, however, it began to fall into disrepair and destruction. During the Turkish occupation it was not used, so today only ruins remind of its past.