The 13th century church that used to be a part of a monastery is known for its interior frescoes created by remarkable Pisan painters.
Wikipedia http://it.wikipedia.org/wiki/Chiesa_di_San_Francesco_%28Buti%29
Address 61 Via Piavola, Buti 56032, Italy
Coordinates 43°43'39.414" N 10°35'22.661" E
