The province of Viterbo
It is bordered to the north by the provinces of Siena and Grosseto in Tuscany.
It is bordered to the south by the Province of Rome.
It borders to the east with the provinces of Orvieto and Terni in Umbria.
It borders to the west with the Tyrrhenian Sea.

How far is Viterbo from other cities:
80 Km North of Rome
200 Km South of Florence
130 Km South of Siena
40 Km West of Orvieto

Le principali strade statali
- Autostrada A1 Roma-Firenze – Uscita Casello di Orte
- E45 Superstrada - Viterbo-(30 Km) Orte- Perugia-Cesena
- SS1 Aurelia (Roma-Civitavecchia A12) costeggia la provincia lungo il litorale tirrenico.
- SS2 Cassia costeggia la provincia nell’entroterra ( Roma –Viterbo – Siena - Firenze)

The main highways
- Highway A1 Rome-Florence · Exit Orte
- Expressway E45 Orte-Viterbo-Orte (30 Km)-Perugia-Cesena
- SS1 Aurelia (A12 Roma – Civitavecchia) runs beside the province along the Tyrrhenian coast
- SS2 Cassia runs beside the province in the hinterland (Rome · Viterbo · Siena-Firenze)

Ports and airports
Cruise Port of Civitavecchia (20 kilometres from Tarquinia)
Rome Fiumicino Airport (100 km from Tarquinia)