Orvieto is a city and comune in Umbria (Italy) situated on the flat summit of a large butte of volcanic tuff. The site of the city is among the most dramatic in Europe, rising above the almost-vertical faces of tuff cliffs that are completed by defensive walls built of the same stone. In Orvieto there are about 21.000 people.
The comune of Orvieto includes the frazioni Bagni di Orvieto, Bardano, Baschi Scalo, Benano, Biagio, Botto di Orvieto, Canale di Orvieto, Canonica, Capretta, Ciconia, Colonnetta di Prodo, Corbara, Fossatello, Morrano, Orvieto Scalo, Osteria Nuova, Padella, Prodo, Rocca Ripesena, San Faustino, Sferracavallo, Stazione di Castiglione, Sugano, Titignano, Tordimonte, Torre San Severo.
Main sights of Orvieto are: Duomo (Orvieto Cathedral), San Giovenale (the oldest church in Orvieto), Etruscan ruins, Orvieto Underground, Palazzo del Capitano del Popolo, The Albornoz Fortress, The Pozzo di S. Patrizio, a well built for the Popes.