The island of Ischia lies at the northwest entrance to the Bay of Naples, opposite Cape Miseno and just west-southwest of Naples, Italy. Oblong in shape, with a circumference of 21 miles (34 km) and an area of 18 sq miles (47 sq km), the island consists almost entirely of volcanic rock and rises to 2,585 feet (788 metres) at Mount Epomeo, an extinct volcano.

Its volcanic soils are fertile, and the wine, called Epomeo, that is produced on Ischia is famous. Wheat, olive oil, and citrus fruits are also economically important.

Well known for its mild climate, picturesque scenery, and numerous thermal mineral springs, Ischia is much frequented as a health and vacation resort. The more important towns are in the north of the island: Ischia, the administrative centre and seat of a bishop, consisting of the fishing village of Ischia Ponte with a medieval castle, and Ischia Porto; Casamicciola Terme; Lacco Ameno; and Forio.

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