This name according to tradition derives from ancient Etruscan people, used to be called Tusci, living in the villages of Lazio region, surrounding today's Viterbo. Tuscia Viterbese is a territory divided in three areas, which have peculiar, environmental town planning features:

• Tarquinia and Montalto overlook to the west, the coastline of the Tyrrhenian Sea, close to the Maremma countryside the towns of Canino, Tuscania and Monteromano can be found.
• In the middle you can find the wooded land of Monte Rufeno, the Volsini and Cimini hills( Lake Bolsena, Lake Vico and the town of Viterbo).
• To the east the Tiber Valley which landscape is shaped by clayflows( "CALANCHI") where we may visit ancient historical centres, as Civita di Bagnoregio known as the "dying town".

The landscape of Tuscia Viterbese is worth a lot because it's a varied landscape. There are a lot of nature reserves: the one of Lake Vico( Caprarola), the Valle of Treja( Calcata, the nature reserve of Monte Rufeno, that of Marturanum( Barbarano Romano) and the Valle of Calanchi ( Bagnoregio). The coastline of the Tyrrhenian Sea presents two important touristic towns: Montalto di Castro, and Tarquinia one of the most ancient Etruscan city. The inland of Maremma plain presents woods and Mediterranean plantations. Further on to the north, towards the Volsini hills the charming area of Lake Bolsena. In the middle of the lake in its clear and unpolluted waters, there are two islands; Bisentina and Martana (which is remembered according to tradition, because of the tragic death and murder of Amalasunta, Queen of the Goths.)
Bisentina island holds a great fascination for the visitor due both to beauty of its natural habitat and its elegant artistic elements. Lake Vico, too, in the heart of Cimini hills at an altitude of 500mt, is a charming area, where it is possible to find rare species of waterbirds, and a luxuriant vegetation, rich in beech, chestnut and hazelnut.
The mild climate as well as the natural richness of waters, woods and the fertile land both on the plain and in the hills, have fostered human settlements in Tuscia since prehistory.
Ancient human settlements in Tuscia are still visible in many towns: some of them are set on tufaceous cliffs( Calcata, Vitorchiano, Grotte di Castro, Bomarzo, Blera, Civita di Bagnoregio) where houses are built on tufa stone, on rock, on "grotto" or previous buildings.
The landscape of countryside is rich in farmhouses, castles, towers which are a rare example of architecture hardly to be found elsewhere.
You can see evidence of the old Etruscan paths covered with basalt of Roman Consular roads; bridges and aqueducts belonging to different periods still to be seen as in Vulci ( Ponte of Abbadia) and in Viterbo (Ponte of Duomo in the historical centre of town) , but above all in Civita Castellana settled over the ruins of the Etruscan Falerii Veteres.