The municipality of Vagli di Sotto is in the province of Lucca, at an altitude of 600 m asl and it has a population of about 1200 inhabitants. The churches of San Regolo and of Sant' Agostino can be admired inside the city.

The Liguri Apuani populations originally occupied the territory of Vagli di Sotto, which was later settled by the Etruscans, whose presence is testified by many archaeological finds, around the IV century B.C.
In the early Middle Ages, the area was controlled by the Byzantines, until the invasion by the Longobards who transformed Vagli into an important strategic and military garrison.
In the IX century, a group of nobles from Careggine, who were Ghibellines and allies of the Pisans against Lucca, dominated the territory in the XI century. Lucca succeeded into making an irruption inside the area after the first half of the XIV century.
The conquest of Vagli and its handing in to the Republic of Lucca was due to Alderigo degli Antelminelli, who stipulated a treaty with the city in 1371. With it, he also handed over the village of Vagli, which had always been Guelph and hostile to its ancient rulers and was therefore given to the administration of Camporgiano.
Vagli entered the Dukedom of Modena under the Estensi family in 1451, and it was particularly in tune with this new seigniory.
When Napoleon ordered the creation of the Cispadana Republic, its inhabitants and those of Castelnovo and Trassilico rebelled against the French occupation with a revolt in 1796. They were defeated and had to wait for the Estensi to return until the Restauration in 1814 .
In the second part of the XIX century, after the annexation to the kingdom of Italy, Vagli experienced a severe demographic drop caused by emigration and the cholera epidemics of 1884.
This town recovered its strength in the XX century, thanks to marble extraction, but after World War II Vagli, that bore the Fascist dictatorship more than any other town, went through the phenomenon of depopulation once again.
In effect, in 1953, some hamlets (Pantane, Piari and Fabbriche di Careggine) were unreasonably evacuated and submersed by an artificial lake in the ambit of some raising works of the Vagli dam.