Valentano , with its wonderful panoramic views, is around 130 km from Rome and 5 km from Lake Bolsena.
It origins are steeped in antiquity, as can be seen from the exceptional archeological discoveries made in the vicinity. The Farnese Fortress and Castle , which Pier Luigi Farnese had built around a 14th century manor situated at the highest point of the town, is most attractive.
Over 20 m tall, the complex dominates the town below and boasts a magnificent facade with an unusual brick colonnade.
It has recently been restored and today houses the Museum of Tuscia Prehistory [Museo della Preistoria della Tuscia].
Churches worth visiting include the Collegiate Church of San Giovanni Apostolo ed Evangelista , close to the Farnese Fortress and dating from the 12th century, and the Church of Santa Maria, built in the 15th century, sitting halfway along the main street, which contains an exquisite fresco depicting the Madonna della Rosa.
As one strolls along the town streets various fascinating historical buildings may be admired, such as the Town Hall of Renaissance origin and the Porta Magenta, also known as the Gate of the Grotesque Mask on account of the curious mask sculpted on top, from a drawing by Vignola.
The Palazzo dei Vitozzi , with its windows framed in volcanic stone, is of particular architectural significance. Finally, worth seeing is the Palazzo dei Cruciani, birthplace of the renowned mathematician Paolo Ruffini.