Home - In and around Abbey of San Pietro in Valle in Terni Umbria The abbey of San Pietro in Valle is a historic monastery of Valnerina.It is located in the province of Terni, in the municipality of Ferentillo, to about 370 m s.l.m.The old monastery is privately owned and used as a residential hotel, while the church belongs to the ... Go to entire page > Abbey of San Pietro in Valle in Terni Umbria