 It was erected with elements of the pre-existing Church of San Paolo, from the old Pietraroja destroyed by the earthquake of the 1688.It has a Romanesque portal (11th century) with the two sides supported by a lioness and a feminine bear nursing two infants and the high-relieves.Among the trees in Pietraroja's territory are the beeches ("fài" in dialect), the oaks ("cèrque"), the chestnut trees, the maples, the minor maples ("ócchi"), the elms ("ùrmi"), the firs and the pines (not native of the place), the poplars ("chiùppi), the ashes, the flowering ashes, the Turkey oaks, the lindens ("téglie"), the filbert trees ("ullàne"), the willows ("sàuci"), the osiers, ("vétèche") the wild apple-trees ("melàini"), the wild pear-trees ("peràini"), the ilexes ("ìuci"), the yew-trees, the junipers ("inépri") and the hollies ("arifógli").