

Tuscany · Pisa
Castelnuovo di Val di Cecina
A copper and geothermal borgo at 576 meters in the Cecina valley, where natural steam vents and medieval towers sit on the same hill.
- Best time
- Apr–Oct
- By car
- 1 h 16 min from Siena
- Population
- 2,064
Known for
FUMAROLE
Natural steam vents around Sasso Pisano, hissing through the stone streets and staining them yellow with sulfur.
COPPER MINES
Medieval and modern copper extraction under the Republic of Pisa, active in the surrounding hills into the twentieth century.
CHESTNUTS
Apennine subsistence crop still harvested on the slopes above town, with autumn sagre across the comune.
When to visit
Best · Apr–Oct
- J9°
- F11°
- M12°
- A15°
- M20°
- J25°
- J29°
- A29°
- S24°
- O19°
- N13°
- D10°
- Best
- Hot or crowded
- Quiet
- Mostly closed
Daytime averages, 2020–2024. Weather data by Open-Meteo.com.
Why come
Castelnuovo di Val di Cecina sits on a high spur above the Cecina river, in the geothermal heart of Tuscany. The hills around it are scored with soffioni, the same steam that Francesco Larderel learned to harness in 1818 a few kilometers down the road: the natural resource that made this stretch of Tuscany industrial rather than merely agricultural. The frazione with the steam vents in its streets sits apart from the main village, which grew instead around copper.
The two economies, mineral steam and mined ore, shaped separate parts of the comune rather than the same hill, and the fortress on the neighboring ridge stood to survey the valley that connected them. The chestnut, gathered on the slopes above both, was the food that got people through the winter regardless of what came out of the ground. What this comune amounts to, then, is a single valley organized around three different things the earth gave it: heat, copper, and chestnuts, each claimed by a different part of the terrain.
The Sunday letter
Castelnuovo di Val di Cecina is on our list. Its letter is still to come.
We are writing about all 1,000 of these towns, one at a time, in a free letter every Sunday: the photo, the food, the festa. That is our mission. Sign up and you will be there when Castelnuovo di Val di Cecina comes up. By Peter & Sophia, from Pietrasanta.
How to get there
From Florence / Pisa (PSA), about 1h 47m by car.
Bologna (BLQ) is about 2h 37m away.
By car from the centre of Siena 1h 16m, Pisa 1h 41m or Florence 1h 44m.


What to see
Centro storico
Surviving towers and stone houses mark the boundary of the old ore concession, laid out around the medieval copper-mining works at 576 meters.
Parco delle Fumarole di Sasso Pisano
Boiling pools and vents on the slopes around Sasso Pisano, ground that hisses underfoot and a landscape that shaped Tuscan industry before it became a place to walk through.
Rocca Sillana
Pentagonal keep on the next ridge, with views that take in the full sweep of the upper Cecina valley from its walls.
Pieve di San Bartolomeo
Romanesque stone façade at the center of the old village, the parish church that anchored the mining settlement below the towers.
Biolago di Sasso Pisano
A thermal pool fed directly by the fumarole field, open to bathers, its temperature shifting with the season rather than held constant.
The slow-trip planner
Building a trip? Find where Castelnuovo di Val di Cecina fits in a slow Italy circuit.
Answer five questions. We will shape a geographically coherent slow trip from the 1,000 Italian towns most travelers skip. Yours to save and share.
Living here
- Population 2,064
- Remotei
- Pharmacy in town
- High school within a 30-minute drive
- Nearest airport Florence / Pisa, 1 h 47 min drive
- Regional capital Firenze, 1 h 44 min drive
This is a thermal town: terme operate here.
Common questions
- What is Castelnuovo di Val di Cecina known for?
- Castelnuovo di Val di Cecina is a copper and geothermal borgo at 576 meters in the Cecina valley, where natural steam vents and medieval towers sit on the same hill.
- Where is Castelnuovo di Val di Cecina?
- Castelnuovo di Val di Cecina is a comune in the province of Pisa, in Tuscany.
- What is the nearest airport to Castelnuovo di Val di Cecina?
- Florence / Pisa (PSA), about 1h 47m by car.
- How long is the drive from Siena to Castelnuovo di Val di Cecina?
- About 1h 16m by car.
- When is the best time to visit Castelnuovo di Val di Cecina?
- Best in Apr–Oct. July is the warmest month, averaging 29 degrees, and November the wettest, with about 13 rain days.
- Which other towns are like Castelnuovo di Val di Cecina?
- Castiglione d'Orcia, Chiusdino and Casale Marittimo.
- How many people live in Castelnuovo di Val di Cecina?
- 2,064 at the 2023 count.
Tags & datadesignations · numbers · sources
Recognised as
The numbers
- Elevation: 576 m
- Population: 2,064
- Surface area: 89.02 km²
These figures were compiled from public directories: ISTAT, OpenStreetMap and Wikidata, and from the official listings of the guides named on this page. Town details change; verify with official sources before you travel.
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