Filetto, an ancient village in the municipality of Villafranca in Lunigiana, reveals its Byzantine origins both in name and shape: the term "Filetto" derives, in fact, from the Greek Fulacterion, which means "fortified village".
The town still retains the quadrangular shape typical of the foundation villages and late ancient settlements, with perpendicular streets and central squares. To the oldest part, characterized by narrow alleys, such as the Jewish village and a large market square, is added a late Renaissance "section", the fascinating Borgo degli Ariberti.