The Tower of Bargiglio, called “The Eye of Lucca” for its strategic position overlooking the Serchio Middle Valley, the Garfagnana basin and the Plain of Lucca, was able to maintain visual contact with numerous castles in the area and thus guaranteed protection with its signalling system of smoke during the day and fire at night. Therefore, from the tower top you can see the castles of Castiglione Garfagnana, Lupinaia, Montefegatesi, Coreglia, Tereglio, Lucignana, Vitiana, Casabasciana, Crasciana, Fornoli, Benabbio, Jovian Controne, Lugliano, Corsagna, Anchiano and of course the city of Lucca.