Viterbo is of Etruscan origin and was subsequently occupied by the Lombards and then became Papacy, and the latter the time when he met the most prosperity both commercially and artistically. Even today you can admire remains of Roman public works. In many quarters is still evident medieval appearance to visit precisely the quartiere San Pellegrino. So as not to be missed are the Cathedral, the Church of Santa Maria della Verità, the Papal Palace, the Church of San Francesco. The Centre of Viterbo offers numerous, as well as important works of art. The most famous is certainly the Papal Palace, built between 1255 and 1266 on the Hill of San Lorenzo to protect the Pope, with the famous loggia formed in one side by seven arches supported by slender columns twin columns that intersect to form an elegant entablature. From the loggia we enter the great Hall of the Conclave, the scene of the famous election of Pope Gregory X.