Ischia is a VOLCANIC ISLAND with 103 thermal springs, 69 fumarole fields, and a tradition of thermal bathing that predates Roman civilization. The Greeks called it Pithekoussai and settled it in 770 BC — the FIRST Greek colony in the Western Mediterranean (before Syracuse, before Cumae, before all of Magna Graecia). The thermal water ranges from 15°C to 100°C depending on the source. At Sorgeto Bay, volcanic vents heat the SEA ITSELF — you swim in water that gets hotter as you approach the rocks. The thermal parks (Negombo, Poseidon, Castiglione) combine Japanese-garden aesthetics with Mediterranean thermal culture. Naples → · Thermal guide →
Giardini Poseidon (Forio): The LARGEST thermal park in Europe — 22 pools at different temperatures (28-40°C), a private beach, a sauna carved into the cliff, a Japanese garden. €35 full day. Negombo (Lacco Ameno): Smaller, more ELEGANT — designed as a botanical garden with thermal pools hidden among exotic plants. Contemporary sculpture. €35. Castiglione (Casamicciola): 10 pools cascading down a hillside toward the sea. €28. Sorgeto Bay (free, Panza): A WILD beach where volcanic vents heat the seawater. Walk down 200 steps. Mix hot spring water with cold sea to find your temperature. Go at night — the hot water, the stars, the steam rising. Free. Always open.
Castello Aragonese: A fortified island connected by a causeway — medieval castle, churches, gardens, views. €10. Monte Epomeo (788m): Hike or mule ride to the summit — the entire Bay of Naples from above. Sant’Angelo: The prettiest village — car-free, pastel houses, a tiny harbor, the Maronti beach (fumarole-heated sand — bury yourself and feel the warmth).
Ferry from Naples (Molo Beverello): Hydrofoil 50 min (€20). Ferry 1.5h (€12). Stay 5-7 days: Ischia rewards time — one thermal park per day, a beach, a hike, a village dinner. The island is 46km² — scooter (€25-35/day) or bus (frequent, €1.50/ride). All thermal →