Terme di Baia Naples Phlegraean
- Location
- Baia, Pozzuoli, Campania, Italy
- Water type
- bicarbonate
- Temperature
- 37 °C
- pH
- 8
Water profile
Soothing — neither hot nor cold, perfect balance.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Terme di Baia Naples Phlegraean is a thermal spa in Bacoli, a municipality on the Phlegraean Fields (Campi Flegrei) peninsula west of Naples, Italy, built upon one of the ancient world's most celebrated resort destinations — Baiae, the legendary Roman thermal resort where Julius Caesar, Augustus, and Nero bathed in the volcanic springs of this hyperactive caldera landscape. The naturally bicarbonate thermal waters here flow from the Phlegraean Fields' intense volcanic activity — a supervolcano system where bradyseism periodically submerges and re-emerges the ancient Roman villas, temples, and bath complexes that now form the underwater archaeological park of Baia. Bathing in the thermal waters of the Phlegraean Fields above the submerged ruins of antiquity's most famous spa resort, in the volcanic shadow of Vesuvius across the Bay of Naples, offers one of the world's most historically resonant and geologically spectacular hot spring experiences.