Calidario Terme Etrusche
natural thermal lake and Etruscan wellness circuit
About
Calidario Terme Etrusche is a resort in Tuscany near Venturina Terme with a hotel. Its heart is the Sorgente Naturale, a natural thermal lake of more than 3,000 m², and the Thermarium, a wellness area with a sauna, steam bath and massage rooms. The hotel is on site, and non-guests can enter the lake and the Thermarium on a day ticket.
The water leaves the spring at a constant 36 °C, but the measured average in the lake varies with rainfall, and the site quotes about 31 °C. The Thermarium offers a sauna, steam bath, cold aromatic showers, hydromassage waterfalls and massage rooms. Entry is by advance booking only, and both the lake and the Thermarium can be visited on a day ticket.
- Sorgente Naturale thermal lake over 3,000 m², spring water at 36 °C
- Thermarium: sauna, steam bath, cold aromatic showers and hydromassage waterfalls
- A Thermarium ticket includes the lake for the same four-hour window
- Open until 23:30 in summer, otherwise until 20:30
- Aqvolina restaurant and a refreshment area
Opening hours
| Sorgente Naturale, Mar–Jun and Sep–Jan | 9:30–20:30 |
|---|---|
| Sorgente Naturale, Jul–Aug | 9:30–23:30 |
| Thermarium, daily | 10:00–20:00 |
Closed from 7 January to 18 March 2027; on 25 and 31 Dec closing is already at 19:30. Last entry to the lake is 18:30 or 20:30 depending on the season, to the Thermarium 16:00.
Prices
| Sorgente Naturale, adultdepends on the day | €25–45 |
|---|---|
| Sorgente Naturale, child 6–9 | €20–30 |
| Sorgente Naturale + Aqvolina | €50–65 |
| Thermarium (lake included, 4 h) | €48–79 |
| Thermarium + Aqvolina | €72–90 |
| Day Spa: Thermarium + 25 min massage | €129 |
| Day Spa: Thermarium + 50 min massage | €168 |
Prices come from the online shop, VAT included, and vary by day; weekends and holidays sit at the upper end of the range.
Amenities
What is here and what is not. Not everyone wants saunas and pools, not everyone a swimwear-free sauna.
- Poolyes
- Thermal wateryes
- Outdoor pool or tubyes
- Saunayes
- Steam bathyes
- Massage and treatmentsyes
- On-site accommodationyes
- Entry without a stayyes
What is not listed here is unknown to us or the operator has not said.
Pros and cons
Pros
- A natural thermal lake instead of a regular pool
- Thermarium with sauna and steam bath, lake included in the same ticket
- Open late into the evening in summer
- A refreshment area on site
- A hotel and restaurant on site
Things to keep in mind
- You cannot get in without a prior booking
- Closed in winter (7 Jan–18 Mar 2027)
- The Thermarium is 14+, younger children cannot enter; the lake is 6+
Who it suits and how it works
Who it suits
- a couple for an afternoon
- a wellness day on a Tuscany road trip
- bathing in a natural lake
Rules and good to know
- A full shower is required before entering the water, sauna or steam bath
- Hair must be tied up while bathing, otherwise a swim cap is compulsory
- Bring your own towel, robe and slippers or rent them at reception
- The Thermarium is 14+ (under 18 only with an adult), the lake 6+
- No outside food; phones are asked to be kept in airplane mode
Contact
- Address
- Via di Caldana 6, 57021 Venturina Terme (Campiglia Marittima, LI)
- Phone
- +39 0565 853411
- [email protected]
Details from the operator's own site, as of 1 Nov 2026. Check them with the operator before you go: calidario.it
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