The beautiful Church of Saint Jacopo stands in the valley of the same name about 1 km from Vicopisano. It was built in the Lombard era and was originally dedicated to Saint Mamiliano, as the inscription on the architrave of the main portal still recalls. The dedication to this saint is very particular, as his cult was widespread in the Tuscan Archipelago and in northern Lazio, while in our area it was completely absent. Documented as early as the 8th century, it was annexed to a monastic complex; while from the 12th century it is mentioned as a priory, in the 14th century it was in the hands of the Augustinian Hermits. Named after Saint Jacopo in the first half of the 15th century, it began to decay shortly afterwards due to the continuous raids and the insecure situation of the area, caused by the wars between Pisa and Florence.
During the 19th century, the remains of the ancient monastery were transformed into a large farmhouse, later a privately owned residential villa.