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Natural Spring

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Immersed in these ancient natural springs, men and women throughout the ages have sought the warm and relaxing properties of these mineral waters which leave an indelible imprint on their bodies.

Over the centuries, the Etruscans, Christian hermits, Langobardic knights, Roman legionaries, grand dukes and famous architects of the Medici were overwhelmed by the sweet climate of this valley, were fed by its richness, were entranced by the sea and welcomed by the gentle warmth of these waters.


Opening hours and rates

2021 Closing period for general maintenance: from January 1st to April 20th.

Adults Children (6 – 9 years)
Daily Entrance
March –  20th June: 9:30 – 21:00
21st June – 12 September: 9:30 – 24:00
13th September- January: 9:30 – 21:00
25th December : 9:30 – 21:00
31st December: 9:00 – 19:00
€ 24,00 € 12,00
Half Day Entrance:
March –  20th June: 9:30 – 14:30 or 15:30 – 20:30
21st June – 12 September: 9:30 – 16:00 or 17:00 – 23:30
13th September- January: 9:30 – 14:30 or 15:30 – 20:30
€ 17,00 € 12,00

Advance booking is required.

SUNSET SPECIAL Adults Children (6 – 9 years)
March –  20th June: 18:30 – 20:30
21st June – 12 September: 22.00 – 24.00
13th September-January: 18.30 – 20.30
€ 10,00 € 10,00
Natural Spring 9.30-14.30 + Relax Massage 25′ + Light Lunch € 75,00
Natural Spring 9.30-14.30 + Relax Massage 50′ + Light Lunch € 105,00

Please notice:
Advance booking is required.
Access is allowed for people over 6 years old.
It is forbidden to bring food from outside.
Families are always welcome. Parents are though gently asked to look after their children to maintain a relaxed atmosphere for all the Guests present in Calidario Terme Etrusche.
Entry ticket includes the use of the deck chairs and chairs while stock lasts.

Conventions, Subscriptions and Cards Ask for Information


The temperature of the Natural Spring changes according to the different weather conditions. The water gushes constantly at 36° C all along the year, but the average flow rate could change from 100 to 450 lit/sec.

In case of a generous rainy season, the springs are abundant so there is a higher concentration of hot water and a general increase of the average temperature; in case of poor rain, the average temperature is lower.

Chemical Components Ask for Information

Origin & history

Imagine the Etruscans bathing surrounded by the lake’s vapors while, in this area they were learning how to fuse metals: at that time the spring was known as “Aquae Populaniae”.

Roman legionaries drew to this lake and still at the present day, it is possible to appreciate important signs of their presence: “Caio Trebazio’s mausoleum” – a small tower in “Caldana” near which a Roman mark was found with “Caius Trabatius” written on it. You could still see the tower at only 400 meters far from Calidario Terme Etrusche Resort. On the mark, there is also a tercet, probably commissioned by the Roman administrator of the spring,  which was later written on the “Tabula Peutingeriana” at the time of Emperor Theodosius (IV century AD), that translated sounds like this:

“To Galeno’s followers disgrace, oh hot spring that drips from my chest, give health to Venus”.

The water containing walls are dated between 1249 and 1257. Val di Cornia was a property of the Gherardesca family since the IX century and it remained under the control of Pisa till the 1406, year in which it moved under the power of Florence. In 1801 it was under the dominion of the French as well as the rest of the Granducato di Toscana, to which was reunited from 1815 until Unità d’Italia.

Did You know that?

Old scientific essays showed that our water is the result of a unique natural phenomenon.
Imagine a huge underground river which slowly flows at a great depth in close contact with calcareous rocks, where it gets rich of microelements which are great for our skin and bones.
Not everyone knows that this natural lake is one of the most important in Europe, unique for its size, with a surface of about 3000 sqm. A thousand-year-old natural lake with therapeutic properties. The lake is a real gift that Mother Nature gave Val di Cornia 6 million years ago through the rise of a granitic element at an exceptional high temperature.
Calidario Terme Etrusche’s Springs are surrounded and protected by Parchi Val Di Cornia where the Mediterranean scrub creates breath-taking landscapes between medieval villages and the Mediterranean sea.

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Calidario Terme Etrusche

Via di Caldana 6, Venturina Terme, Campiglia Marittima LI

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