Ischia

Ischia ( , Italian:, Neapolitan:) is a volcanic island in the Tyrrhenian Sea. It lies at the northern end of the Gulf of Naples, about 30 kilometres (19 miles) from the city of Naples. It is the largest of the Phlegrean Islands. Although inhabited since the Bronze Age, as a Greekemporium it was founded in the 8th or 9th century BCE, and known as , Pithekoūsai.

Roughly trapezoidal in shape, it measures approximately 10 km (6 miles) east to west and 7 km (4 miles) north to south and has about 34 km (21 miles) of coastline and a surface area of 47 square kilometres (18.1 sq mi). It is almost entirely mountainous; the highest peak is Mount Epomeo, at 788 metres (2,585 feet).

Ischia is the name of the main comune of the island. The other comuni of the island are Barano d'Ischia, Casamicciola Terme, Forio, Lacco Ameno and Serrara Fontana. The island is very densely populated, with more than 62,000 residents as of 2024 census data, corresponding to a population density of roughly 1320 inhabitants per squared kilometre.