BRACCIANO, province of Rome, Italy, 25m. N.W. of Rome by rail, on south-west shore of Lake Bracciano, 915ft. above sea level. Pop. , (town) , 5,996 (commune) . Its fine castle (built by the Orsini about 147o and since 1696 the prop erty of the Odescalchi) has preserved its character. The beauti ful lake is the ancient Lacus Sabatinus, which gave its name to a Roman tribe. It is 22sq.m. in area, 538ft. above sea-level, and 53oft. deep and almost circular. Radiating tufa deposits extend as far as Rome; various small craters surround it; warm springs occur in the district, especially those of Vicarello. Many remains of ancient villas may be seen round the lake. The water of the lake partly supplies the Acqua Paola, a restoration by Paul V. of the Aqua Traiana.