The Church of San Pietro in Forliano dates back to the XIII century; it is a small Romanesque church located on a corner of the square dedicated to Sant'Agostino and dominated by the church of the same name. The simplicity of its gabled façade and its small bell tower would seem to indicate a religious building which maintains the same simplicity within its walls; however, inside the church, a real treasure chest, with frescoes dating back to the early fourteenth century: on one side the Annunciation, the Madonna enthroned between two female saints and the Adoration of the Magi by Memmo di Filippuccio, on the other Madonna leading baby Jesus by the hand, between Saints Paul and John the Baptist, attributed to Giovanni d'Asciano.