The Fifth Desk · Evaluation
Act I · The Map
Peter Zumthor · a public thermal bath set into a mountain slope, of Valser quartzite, a gneiss quarried in the valley, laid in thin horizontal slabs and bonded with concrete into a load-bearing composite wall · a field of large stone blocks standing in one continuous bathing hall, each block hollowed to hold a room, a service or a small bath and each carrying its own roof slab, the slabs parted by narrow glazed joints through which daylight falls in lines down the stone; a large indoor pool and an outdoor pool; small bath rooms of different temperature, light and sound, among them a hot bath, a cold bath, a flower bath and a room built for sound; changing rooms; a grassed roof, so that from above the building reads as part of the hillside, and an open face to the valley on its downhill side · fed by the thermal spring of Vals, below the hotel of the 1960s to which it is joined, at Vals, Graubünden, Switzerland · opened December 1996 · Peter Zumthor, with his studio at Haldenstein, for the commune of Vals, which had bought the bankrupt hotel and spa complex on the site · as it stands, the bath as built and in use as a bath; owned with the hotel by a private owner since 2012
Mode
Bath as a passage through the senses; a public thermal bath built of its valley’s stone and set into its slope
Mythos
The cave in the mountain; the quarry, stone left standing where the rest was cut away; descent and immersion; the spring as source
Phase
Commissioned by the commune of Vals after it bought the bankrupt hotel and spa complex of the 1960s; opened December 1996; its architect awarded the Pritzker Prize in 2009; sold with the hotel to a private owner in 2012; in use as a bath for nearly thirty years
Presentation
Blocks of Valser quartzite in one continuous hall, each under its own roof slab, the slabs parted by glazed joints; a large indoor pool, an outdoor pool, small baths of heat and cold, a flower bath and a room for sound; a grassed roof and an open face to the valley
Register
Quiet, warm and grave; green water and dark stone under lines of light; grandeur of mass and depth rather than of vastness
Scale
One building in one slope; the body and its senses, a spring, a valley and a village
Governing Proposition
A mountain commune that has bought a bankrupt spa commissions a new bath at its thermal spring. The wager of the building is that bathing is a practice of the body’s attention, not a hygiene or a sport, and that a building made of the valley’s own stone, sunk into the slope and hollowed into rooms of heat and cold, darkness and light, can make the bather know the mountain by touching, hearing and floating in it.
Act II · The Essay
Movement I
Vals is a village in Graubünden, in eastern Switzerland, and its thermal spring is the reason for a bath there. In the 1960s a hotel and spa complex was built at the spring. It went bankrupt, and the commune of Vals bought it. To give the village its bath again, and with it an economy, the commune commissioned a new thermal bath from Peter Zumthor, who worked with his studio at Haldenstein and was then little known beyond Graubünden. The bath opened in December 1996.
The inheritance was crowded. The spa of the nineteenth century had made bathing a cure, in the halls of treatment of the Kurhaus. The modern swimming hall, bright, tiled and functional, had made it a sport, and the hotel spa of the 1960s on this very site belonged to that line. Behind them stood the Roman and the Ottoman bath, the bath as a civic and almost ritual institution. In architecture the decade was given to image-making, postmodern and deconstructivist, while in Switzerland an architecture of material was already gathering.
Zumthor’s work before it was small and in timber: the shelters over the Roman ruins at Chur and the chapel of Saint Benedict at Sumvitg. The commission asked for something of another kind, and the stake was real: a small commune’s investment in its economy, an architect whose buildings had been small, and a wall that had not been tried. The lineage he drew on was one of material and light, the rooms of Kahn, Scarpa and Lewerentz, and it was already in hand. What he made of it at Vals was new.
Movement II
The bath is built of the valley’s own stone, Valser quartzite, a gneiss quarried in the valley. It is laid in thin horizontal slabs and bonded with concrete into a composite wall that bears the load. The stone is not a cladding on a frame. It is the structure, and the building is made of the mountain it is cut into.
The building is set into the slope below the hotel. Its roof is grassed, so that from above it reads as part of the hillside, and only on its downhill side does it open, to the valley. Half sunk in the ground, it keeps its warmth in the earth and turns its one open face to the view. The section is the first decision: to bury the bath, to cover it with the hill, and to let the mountain’s interior meet the mountain’s face at one edge.
Seen from within, the stone reads as layered rock. The blocks stand like stone left where the rest was cut away, as in a quarry, and the hall between them is a mass hollowed out. The figure that governs the building is the cave in the mountain: chambers in layered stone, sunk in the slope, where water rises warm from the ground. It is not an allusion laid over the plan. It is how the building is made.
Movement III
The plan is a field of large stone blocks standing in one continuous bathing hall. Each block is hollowed to hold a room, a service or a small bath. Each carries its own roof slab, and the slabs do not touch: between them run narrow glazed joints, and through them daylight falls in thin lines down the stone. There is no other light from above. The joints are where the structure parts, and the light marks the parting.
Through the day the lines move down the stone and across the water. The large indoor pool lies among the blocks, and the blocks stand in green water under the lines of light. The first sight of the hall is of that field, stone, water and light, with nothing in it to face. The scale is that of rooms, not of a nave, and the grandeur is of mass and depth, not of vastness.
There is no lane and no single pool to swim. The blocks hide and reveal, and the bath is never seen whole. The bather finds its rooms by turning corners and chooses among them: heat or cold, light or dark, company or solitude. Each round of the building differs from the last. Put the spring in a swimming hall and bathing becomes lengths and a clock; here it is a wandering, and the plan is the means of it.
Movement IV
Inside the blocks are the small bath rooms, each different in temperature, light and sound. Among them are a hot bath and a cold bath, a flower bath and a room built for sound, where a voice returns from the stone. The hot bath is small and enclosed, and the cold bath is beside it. The body passes from one to the other and knows the building by heat.
The round of temperatures is the building’s route. Descent into the earth, immersion and the passage from hot to cold are the oldest figures of purification and renewal, and here they are not referred to but undergone. Take away the hot bath or the cold bath and the round breaks. The bath is recovered as the Roman and the Ottoman bath had it, a practice and an institution, not a facility for hygiene or for sport.
On the downhill side the mass of stone opens. The outdoor pool lies against the face of the valley, and in winter steam rises off the water against the snow and the mountainside across the valley. The openings toward the valley frame the land in stone. From the enclosed hot bath to the open pool the rule is the same: mass hollowed and mass opened, the stone as the body that encloses and the cut as the means of light and view.
Movement V
Zumthor wrote on the building and on the architecture it stood for, in his essays Thinking Architecture and Atmospheres, and the bath became the centre of a theory. Atmosphere, the word he made the matter of his work, entered the vocabulary of the schools. Hélène Binet’s photographs made a way of seeing the bath, and the phenomenology of architecture, with Juhani Pallasmaa’s writing on the senses, took it as a case. It has been read as Swiss regionalism, as a critique of the image architecture of the 1990s, as a renewal of the antique bath and as a study in material.
It became the emblem of the material and phenomenological turn of the 1990s and of the rise of Swiss architecture. The dark stone bath has been answered and imitated in spas and wellness buildings worldwide, until it is a type. In 2009 Zumthor received the Pritzker Prize. Part of that reach runs through his essays and the photographs as much as through the building, and the literature on the bath leans on its architect’s own account.
In 2012 the commune sold the bath and the hotel to a private owner. The bath it had built for the public, to keep the village alive, became part of a private property. A high-rise hotel tower was later proposed for the site; it has not been built. The bath stands as it was built and is still a bath, its blocks, joints, pools and rooms whole after nearly thirty years. The questions it raised are open: whether atmosphere can be designed or only found, whether the freedom of its plan is order or arbitrariness, and what the building is once it becomes a luxury enclave.
Act III · The Twelve
Judged on structure, purpose and site. The composite wall is compelled: the stone of the valley laid as structure, so that the building is made of the mountain it is cut into. The section is compelled: half sunk in the slope and grassed over, the bath kept warm in the ground and open only to the valley. The roof slabs, parted by lines of light, give the only top light. The small rooms are required by bathing as a passage through heat, cold, scent and sound: take away the hot bath or the cold bath and the round breaks. What resists: the placing of the blocks is one of many the system allows, and a block could move or go without the whole falling; some hold rooms any plan would hold; and the joining to the hotel is an inheritance of the site, not a choice of the form.
Score: 8.6 / 10
What can be stated, and holds: that bathing is not a hygiene or a sport but a practice of the body’s attention, made of heat and cold, water and stone, darkness and light, sound and silence; and that a building can teach the body to know a place through its materials, so that the bather knows the mountain by touching, hearing and floating in it. It recovers the bath as a civic and almost ritual institution, the Roman and Ottoman bath, against the swimming hall and the spa of treatments. Held below the bar because most of what the building gives is atmosphere, the word its architect made the matter of his work, and atmosphere is a mood; and because the condition disclosed is private pleasure, without the social or sacred weight of a chapel or a temple.
Score: 8.3 / 10
Elevation is frequent and comes in many registers: in the first sight of the hall, the blocks standing in green water under lines of light; in the light at the roof joints, moving down the stone through the day; in the hot bath, small and enclosed, with the cold bath beside it; in the sound room, where a voice returns from the stone; in the outdoor pool in winter, steam over the water against snow and the mountainside across the valley; and in the openings toward the valley, where the mass of stone frames the land. Height is high but quiet, a grandeur of mass and depth rather than of vastness or dread, at the scale of rooms, not of a nave. Frequency is high, for the bather moves among such moments at will. Held a step below the top because the height never overwhelms.
Score: 8.8 / 10
The archetype is built into plan, section and fabric. The governing figure is the cave in the mountain: a mass of layered stone, sunk into the slope and grassed over, hollowed into chambers where water rises warm from the ground. The quarry is a second figure, the blocks reading as stone left standing where the rest was cut away. Descent into the earth, immersion and the passage from hot to cold are the oldest figures of purification and renewal, and here they are the route of the building, not allusions. The spring is the reason for the place and the matter of the work. The particular stays particular: this valley’s stone, this spring, a village’s bath. Held below the top because cave and spring are built as bodily experience more than as a cosmos ordered in plan, and the sacred depth they carry stays implicit.
Score: 8.8 / 10
The inheritance: the spa of the nineteenth century, the Kurhaus with its halls of treatment; the modern swimming hall and the hotel spa of the 1960s on this very site; the Roman and Ottoman bath as type; and the image-making of the architecture of its decade. The architect’s earlier work, the shelters over the Roman ruins at Chur and the chapel of Saint Benedict at Sumvitg, was in timber and small. The departure: a bath as a geological mass; stone laid as load-bearing structure in a new composite system; darkness and the senses made the programme; the plan a field to wander rather than a pool to swim. The stake was real: a small commune’s investment in its economy, an architect then little known beyond Graubünden, and an untried wall. Held below the top because the turn drew on a lineage of material and light, Kahn, Scarpa and Lewerentz, already in hand.
Score: 8.7 / 10
Substitute another form and the purpose is lived differently or not at all. Put the spring in a swimming hall and bathing becomes lengths and a clock; here there is no lane and no single pool to face, and the field of blocks makes the bath a wandering, in which the bather finds rooms by turning corners and chooses heat or cold, light or dark, company or solitude. The blocks hide and reveal, so the bath is never seen whole. The sunk section and the openings to the valley make the passage from inside to outside a passage from the mountain’s interior to its face. The form is the instrument of what the bath knows about the body. Held below the top because the changing rooms and service blocks carry use more than knowledge, and the joining to the hotel, given by the site, is the form’s weakest moment.
Score: 9.1 / 10
Evidence over promise, over nearly thirty years. The bath has been read through its architect’s own essays, Thinking Architecture and Atmospheres, which made it the centre of a theory; through the phenomenology of architecture, with Juhani Pallasmaa’s writing on the senses alongside; through Hélène Binet’s photographs, which made a way of seeing it; and through the history of the bath as a type. It has been read as Swiss regionalism, as a critique of the image architecture of the 1990s, as a renewal of the antique bath and as a study in material. Questions stay open: whether atmosphere can be designed or only found; whether the plan’s freedom is order or arbitrariness; what the building is once it becomes a luxury enclave. Held lower because the record is short, the literature leans on the architect’s own account, and much of the return is the same sensation renewed.
Score: 8.3 / 10
The field is Swiss architecture of the 1990s, the bath as a type and, through them, international architecture. Intrinsic force: a real reorganisation of what a building is for and made of, the senses and the material made the subject against an architecture of image and sign, and a bath made a sequence of experience rather than a facility. The force is held down by its lineage in Kahn, Scarpa and Lewerentz, and by a Swiss architecture already turning to material. Achieved reach is scored with intrinsic force: it became the emblem of the material and phenomenological turn of the 1990s and of the rise of Swiss architecture; the dark stone bath has been answered and imitated in spas and wellness buildings worldwide; the Pritzker Prize of 2009 followed; and atmosphere entered the vocabulary of the schools, though part of that reach runs through the essays as much as through the building.
Score: 8.6 / 10
Weighed on form, use and fabric, in that order. The form is whole: blocks, joints, pools and rooms stand as built, and the design has outlived the conditions that produced it, a commune rescuing its spa, as a model copied and answered. Use is continuous in its own purpose: it is still a bath. Presence carries a small charge: since the sale of 2012 the bath the commune built for the public has belonged, with the hotel, to a private owner. The fabric is the maker’s, stone in a wet and heated building that asks constant care of its owners. Fame among architects is wide, but fame is presence, not proof, and a span of under thirty years is scored as what it shows.
Score: 8.5 / 10
Judged as command of the medium, structure included. The command is of the first rank and load-bearing: the composite wall of thin stone and concrete, made a structural system and not a veneer; the blocks carrying their own roof slabs, with the glazed joints between them making light a structural line; the section sunk into the slope; and a control of temperature, water, sound and light that makes each room a different instrument. The fittings, from the water spouts to the handrails, are made to the same pitch. The costs: the engineering extends little, short spans and slabs of ordinary reach; the plan’s freedom leaves some junctions and service blocks routine; and the whole depends on a level of maintenance that a wet stone building asks of its owners.
Score: 8.9 / 10
Take the two most distant elements: the hot bath, small, enclosed and hollowed into its block, and the outdoor pool, open to snow and the valley. They obey one law: mass hollowed and mass opened, the stone as the body that encloses and the cut as the means of light and view. The cold bath and the sound room, the great pool, the roof joints and the valley openings are the same law at different scales and temperatures. Material, structure, light and use fall under it, and the range is wide: hot and cold, dark and bright, enclosed and open, solitude and company. Held below the top because the territory is still one building of one material, where a law is easier to keep than across a city or a long campaign; and because the joining to the hotel stands apart from the stone’s rule.
Score: 8.9 / 10
Six orders are held, and one structure places each. The body, which is the building’s subject. The senses and perception, as near as the bath comes to consciousness. The natural order: the mountain, its stone, the spring, the weather and the seasons seen from the outdoor pool. History, as the antique bath recovered in a modern form. The commune: a village that built its bath to keep its economy alive. Society in its plainest form, strangers bathing together. The stone of the valley integrates them. What holds the axis lowest is what is absent: the state; labour, except as the quarry is remembered in the wall; the family; the sacred, which stays implicit; and death. A bath holds the body’s pleasure and its place, not a world, and the figure describes the form.
Score: 7.2 / 10
Act IV · The Reckoning
8.6 / 10 · Final Average
Placement: Tier IV · Canonical
Strongest Dimensions
The Living Form at 9.1, then The Made and The Inner Law at 8.9, with The Sublime and The Archetypal Deep at 8.8. A form that makes the bath a wandering among rooms of heat and cold, light and dark, never seen whole; a wall of the valley’s stone made a structural system, and roof slabs parted by lines of light; one law of mass hollowed and mass opened, from the enclosed hot bath to the outdoor pool in snow; an elevation that comes often and in many registers; and the cave in the mountain built into plan, section and fabric.
Limiting Dimension
The Encompassed at 7.2: the body, the senses, the natural order, history, the commune and strangers bathing together are placed in one structure, while the state, labour, the family, the sacred and death stay outside. Then The Unconcealment and The Bottomless Well at 8.3: a meaning about bathing and the body that holds, carried mostly as atmosphere and as private pleasure; and a record of under thirty years that leans on the architect’s own account. These are one fact: the bath is a building of the senses made whole, and its world is the body’s pleasure and its place. Set beside Fallingwater (8.6), the other building of local stone and water set into its site, it stands level, higher in its archetype and its making, lower in what it discloses, in its turn and in its record.
The Necessity Cap clears at 8.6 against a threshold of 7.5. The Coherence Floor clears with room: The Living Form at 9.1, The Made at 8.9, The Inner Law at 8.9, each against 7.0. The Epochal Gate is unmet: The Archetypal Deep at 8.8, The Swerve at 8.7 and Pressure on Tradition at 8.6 clear the bar of 8.5, and The Imperishable meets it exactly at 8.5, but The Unconcealment at 8.3 falls short by two tenths. The Universal Minimum is met (no axis but The Encompassed falls below 8.3, against 7.5) and The Encompassed, which is exempted, clears its own floor of 6.0 at 7.2. The aggregate of 8.6 stands below the summit’s 9.0 in any case.
Basis · a reading from knowledge of the bath as it stands in 2026, of its documented plan, section, fabric and use, and of the architect’s published writing. No plan, image or written source on the building was consulted. The unit scored is the bath building as built in 1996 and as it stands: the stone blocks, the bathing hall between them, the indoor and outdoor pools, the small bath rooms, the changing rooms and the grassed roof. Nothing of the bath has been lost, replaced or rebuilt. The design is Peter Zumthor’s, with his studio at Haldenstein; collaboration is not charged. The hotel complex of the 1960s to which the bath is joined, the later renovation of hotel rooms by other architects, and a high-rise hotel tower proposed for the site after 2012 and not built are context: none is built onto the bath, and none is scored. The sale of the bath and the hotel to a private owner in 2012 is weighed only as a fact of presence. Nothing is quoted: no inscription or statement of the architect is held word for word. Two titles of his essays, Thinking Architecture and Atmospheres, are named as the record gives them; Hélène Binet’s photographs and Juhani Pallasmaa’s writing are named without titles. Facts that could not be verified are not given, among them the year the architect was engaged, the number of blocks, the temperatures of the baths and of the spring, the module of the stone courses, the finish of the changing rooms and the way to them, how the bath is entered from the hotel, a listing for protection, the terms of public access under private ownership, and the date of the architect’s book on the building.