Carbognano is a comune (municipality) in the Province of Viterbo in the Italian region Latium, located about 50 km northwest of Rome and about 15 km southeast of Viterbo. As of 31 December 2004, it had a population of 1,992 and an area of 17.2 km².

Carbognano borders the following municipalities: Caprarola, Fabrica di Roma, Nepi, Vallerano.

Old city of Viterbo is still today enclosed from powerful walls in lava stone whose construction is begun in 1095 and completed in 1268.

They are high beyond ten meters, with towers very conserved and still intact medieval doors; the nucleus of Viterbo has maintained medieval aspect in particular in the Quarter of Saint Pellegrino, with palaces and towers of XIII century. Monumental complex important of the City of Viterbo is undoubtedly the papal palace on the hill of the dome that represents great testimony of gotic architecture, with double lancet windows, merlons, arches; it is adorned from a splendid one loggia supported from once, while the public square is completed from the cathedral with rinascimentale facade and its beautiful old bell tower.

Most famous they are also the numerous fontanas at particular form, that they adorn to the roads and the Public squares of the City of Viterbo Italy, going back for more to the same period. Other important monuments to Viterbo Italy are the rocca Albornoz,Center of the national museum and the saint church maria of the truth,to the whose flank is the civic museum, with important testimonies of The history of the City of Viterbo Italy; then palace farnese, chigi, of the Podestà and the common one, with its high tower very 44 meters.

In the outskirtses of Viterbo Italy the church of s.maria of the oak, Harmonious rinascimentale construction, the villa lante di bagnaia, Designed from the vignola, the ruins roman of ferento and those Etruscans of castel d'Asso are found. The origins of viterbo appeareance from the archaeological results that have been find again In the centuries, indicating existence to you, since the primordial of the neolithic one, one native etruscan population around to the City of viterbo, the research to the rinaldone and the Riello of are the testimony.