Vetralla is a municipality in the province of Viterbo, on the western side of the Cimini Mountains. Near Vetralla there is Norchia, a prehistoric, Etruscan, Roman and medieval archaeological site, whose necropolis and whose city remains however fall within the territory of the municipality of Viterbo. The origins of Norchia date back to the Bronze Age, but the city experienced its maximum splendor in the period of Etruscan domination, between the 4th and 3rd centuries BC. Norchia is immersed in tuff and woods. Furthermore, Vetralla is a stop on the ancient Via Francigena, which was once traveled by wayfarers and pilgrims to reach Rome. The historic center is a collection of medieval streets full of numerous churches.