Sutri (Latin Sutrium) is an Ancient town, modern comune and former bishopric (now a Latin titular see) in the province of Viterbo, about 50 kilometres (31 mi) from Rome and about 30 kilometres (19 mi) south of Viterbo. It is picturesquely situated on a narrow tuff hill, surrounded by ravines, a narrow neck on the west alone connecting it with the surrounding country. It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").
The modern comune of Sutri has a few more than 5,000 inhabitants. Its ancient remains are a major draw for tourism: a Roman amphitheatre excavated in the tuff rock, an Etruscan necropolis with dozens of rock-cut tombs, a Mithraeum incorporated in the crypt of its church of the Madonna del Parto, a Romanesque Duomo.