Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
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Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Terme di Fiumicino draws chlorurated and bicarbonated mineral water at the mouth of the Tiber where the ancient Portus Traiani, the greatest artificial harbour of the ancient world built by Emperor Trajan in 113 AD, once sheltered 200 vessels in hexagonal basins covering a surface larger than Fiumicino's modern international airport. The thermal springs of the Fiumicino coastline emerge from the same geological layers of marine sediment that underlie the entire Roman coastal plain, and their mineral composition reflects the long history of marine transgression that shaped this stretch of the Tyrrhenian shore. Archaeological digs ongoing around the Fiumicino marina continue to expose the massive concrete quays, warehouses, and lighthouse foundations of Trajan's harbour, creating a unique context in which Roman maritime engineering and modern therapeutic bathing coexist within a few hundred metres of each other.
Insider tip — Terme di Fiumicino stands near the ancient harbour of Portus, where Roman emperors once maintained thermal baths served by the Tiber estuary springs. The modern terme complex retains connections to this deep classical history while offering contemporary thalassotherapy and thermal pools. The location between Rome's international airport and the Tyrrhenian Sea makes it convenient for a restorative stop during layovers. Salt breezes from the nearby coast enhance the outdoor terrace experience.