The fortification was originally part of a system of garrisons and towers controlling the territory along the roads, in particular those of the Serchio valley and that across the pass of Monteperpoli. A stronghold of Lucca since the XIII
th century, it became a reference point in the military set up of the Serchio valley; its importance increased when part of Garfagnana accepted the domination of the House of Este in the XV
th century. Perpoli remained loyal to Lucca and became so an outpost bordering on the possessions of Este. In the XVI
th-XVII
th centuries, because of continual conflicts, the defensive system along the border was strengthened and Perpoli was surrounded with new walls that can still in part be seen incorporated into buildings; access to the village is through the monumental gate.
From here we can see the
Rocca di Ceserana on the other side of the river as well as that of
Trassillico.