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.
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
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
- Best
- Hot or crowded
- Quiet
- Mostly closed
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
We haven’t written Castelnuovo di Val di Cecina’s letter yet.
One town every Sunday, with the photo, the food, the festa. Be there when this one comes up. Free, by Peter & Sophia from Pietrasanta.


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.
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Living here
- Population 2,064
- Off the beaten pathi
- 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.
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, Wikidata — and from the official listings of the guides named on this page. Town details change; verify with official sources before you travel.
Close by
More towns near Castelnuovo di Val di Cecina

Massa Marittima
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Volterra
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Suvereto
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A stone borgo at 127 meters above the Val di Cornia, named for the cork oaks of its forests and ruled from the Rocca Aldobrandesca since 973.

Chiusdino
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A medieval village at 564 meters in the Val di Merse, above a roofless Cistercian abbey.
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