well-preserved medieval
walls, surrounded by a wet ditch. It was always a fortress of
importance, and in modern times is a centre for the agricultural produce
of the district, being the junction of the lines from Padua to Bassano
and from Vicenza to Treviso.

CITTA DELLA PIEVE, a town and episcopal see of Umbria, Italy, in the
province of Perugia, situated 1666 ft. above the sea, 3 m. N.E. of its
station on the railway between Chiusi and Orvieto. Pop. (1901) 8381.
Etruscan tombs have been found in the neighbourhood, but it is not
certain that the present town stands on an ancient site. It was the
birthplace of the painter Pietro Vannucci (Perugino), and possesses
several of his works, but none of the first rank.

CITTA DI CASTELLO, a town and episcopal see of Umbria, Italy, in the
province of Perugia, 38 m. E. of Arezzo by rail (18 m. direct), situated
on the left bank of the Tiber, 945 ft. above sea-level. Pop. (1901) of
town, 6096; of commune, 26,885. It occupies, as inscriptions show, the
site of the ancient _Tifernum Tiberinum_, near which Pliny had a villa
(_Epist._ v. 6; cf. H. Winnefeld in _Jahrbuch des deutschen
archaeologischen Instituts_, vi. Berlin, 1891, 203), but no remains exist
above ground. The town was devastated by Totila, but seems to have
recovered. We find it under the name of _Castrum Felicitatis_ at the end
of the 8th century. The bishopric dates from the 7th century. The town
went through various political vicissitudes in the middle ages, being
subject now to the emperor, now to the Church, until in 1468 it came
under the Vitelli: but when they died out it returned to the allegiance
of the Church. It is built in the form of a rectangle and surrounded by
walls of 1518. It contains fine buildings of the Renaissance, especially
the palaces of the Vitelli, and the cathedral, originally Romanesque.
The 12th-century altar front of the latter in silver is fine. The
Palazzo Comunale is of the 14th century. Some of Raphael's earliest
works were painted for churches in this town, but none of them remains
there. There is, however, a small collection of pictures.

See Magherini Graziani, _L'Arte a Citta di Castello_ (1897).

CITTA VECCHIA, or CITTA NOTABILE, a fortified city of Malta, 7 m. W. of
Valletta, with which it is connected by railway. Pop. (1901) 7515. It
lies on high, sharply rising ground which affords a view of a large part
of the island. It is the seat of a bishop, and co