MONTEFIASCONE, a town of Italy, in the Papal States, situated on a hill, 9 miles N.N.W. of Viterbo, and 54 N.N.W. of Rome. The only public buildings are a cathedral and a few convents. Some remains have been found here of an ancient Etruscan city, the place of which is occupied by the modern town. The wine of the vicinity is reckoned of fine quality. Pop. 4800.