Concrete volumes of The Stone Bath House under a grey sky

The Stone Bath House

The Stone Bath House

Fig. 01 — The Stone Bath House

Fig. 01 — The Stone Bath House

Hillside above a natural thermal spring

Hillside above a natural thermal spring

Location

Thermal spring valley

Year

2024

Area

380 m²

Status

Completed

Client

Valley Springs

Scope

Architecture, interiors, lighting

Duration

28 months

Site

Hillside above a natural thermal spring

A sequence of baths cut into the hill, from bright to dark and from warm to cold.

Baths cut into the hillside around a natural spring. Water, stone and darkness, arranged for slowness.

Visitors move through rooms of decreasing light: a bright changing hall, a warm pool lit from above, a dark cold plunge and a final terrace that opens to the valley. The stone is cut from the same hill that holds the spring.

Aa

The warm pool under a single rooflight

The warm pool under a single rooflight

01

A vaulted passage cut into the hill

A vaulted passage cut into the hill

02

Darkness and lines of light in the resting room

Darkness and lines of light in the resting room

03

From brief to building.

The question we were asked, how we answered it, and what changed once people moved in.

01

The challenge

A fragile spring that could not be disturbed, a site visible from the whole valley, and an operator who wanted an experience rather than a spa.

02

Our approach

We cut the baths into the hill behind the spring and left the source untouched. Rooms follow a sequence from light to dark, each with a single, carefully placed opening.

03

The outcome

The bath house welcomes around 300 guests a day while drawing water at the natural rate of the spring. From the valley, only a stone terrace and a line of rooflights can be seen.

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Natural spring temperature

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Pools, from warm to cold

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Guests a day

Concrete terraces of the baths stepping down the hill
HillsideSpring levelWarm poolRooflight, 2.4 mCut into rock, 7.5 m
Section G–G0%
HillsideSpring levelWarm poolRooflight, 2.4 mCut into rock, 7.5 m
Section G–G0%
HillsideSpring levelWarm poolRooflight, 2.4 mCut into rock, 7.5 m
Section G–G0%

From light to dark.

The section follows the bather: from a bright hall into a warm pool beneath a rooflight, down to the cold plunge and out to the view.

Concrete volumes of the baths

Concrete volumes of the baths

Cut from the same hill.

A dark, warm palette that lets water and light take the lead.

Pools and walls

Valley quartzite

Quarried from the hill that holds the spring.

Pools and walls

Valley quartzite

Quarried from the hill that holds the spring.

Ceilings

Board-marked concrete

Cast against rough timber, so the light catches its grain.

Ceilings

Board-marked concrete

Cast against rough timber, so the light catches its grain.

Benches

Thermally modified ash

Warm to sit on and stable in the humid air.

Benches

Thermally modified ash

Warm to sit on and stable in the humid air.

Fittings

Dark bronze

Rails and spouts that age to a deep brown.

Fittings

Dark bronze

Rails and spouts that age to a deep brown.

“Guests lower their voices as soon as they enter. The architecture does it for us.”

Mira Lindgren, director, Valley Springs

Architecture

ARCHEA

Interior design

Lea Fischer

Structure

Nordic Engineering

Landscape

Atelier Verde

Builder

Kamen Construction

Photography

Studio Lumen

Light grey corner of The Mountain Lodge with a deep cornice

Next project

The Mountain Lodge

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