Castellamare, Or Castel A Mare. I. A seaport of S. Italy, in the province and 17 m. S. E. of Naples, with which it is connected by railway; pop. in 1872, 26,381. It is situated on the lower slopes of the Monte d'Auro, along a sheltered beach, and commands an extensive view of the bay of Naples from Vesuvius to Miseno. It is defended by two forts, and contains a royal palace, a cathedral, five churches, several convents, manufactories of linen, silk, and cotton cloth, 12 thermal and mineral springs, and a national dockyard. It has acquired celebrity also as a summer resort, in consequence of the salubrity of its air and the beauty of its environs. It is built near the site of the ancient Stabiae, which, having been destroyed by Sulla during the civil wars, was afterward occupied principally by villas and pleasure grounds. It was here that the elder Pliny, wishing to approach as near as possible to Vesuvius during the eruption which overwhelmed Herculaneum and Pompeii, met his death, A. D. 79. II. A seaport of Sicily, in the province of Trapani, 4 m. N. W. of Alcamo; pop. about 9,000. The bay is spacious, but not sate during northerly winds.
It exports wine, fruit, grain, manna, and opium.
Castellamare di Stabia.