Bolsena, a municipality in the province of Viterbo, is located on the northern shore of Lake Bolsena, which was formed over 300,000 years ago following the caldera collapse of some volcanoes in the Volsini mountain chain. Bolsena is a renowned tourist location thanks to its village, the presence of the lake and its healthy climate. The area has been inhabited since prehistoric times: traces of villages on stilts have in fact been found inside the lake. The village is one of the most picturesque and evocative in the entire Lazio and is dominated by the massive Rocca Monaldeschi della Cervara, built by the Orvietans between the 13th and 14th centuries.
The fortress houses the Territorial Museum of Lake Bolsena and houses Villanovan, Etruscan and Roman finds. Another monument of considerable importance is the Collegiate Church of Santa Cristina, which stands in the lowest part of the town and was built in the 11th century in Romanesque style. After the Collegiate Church, the most significant religious building is the Church of San Francesco, located in front of the entrance to the medieval village, which maintains its original 13th century Gothic appearance.