The Monastic Cloister Explained: Architecture and Life Around the Garth
Step through a doorway in the aisle of almost any medieval abbey church and you find yourself in a covered walkway wrapped around a square of open grass. Arcades on one side, solid wall on the other, a well or a fountain glinting in the middle distance. This is the cloister, and for roughly a thousand years it was the true centre of monastic life in western Europe. The church was where monks prayed; the cloister was where they lived. Understanding how it worked — architecturally and practically — unlocks the logic of nearly every monastic ruin you will ever walk through.
The heart of the monastic plan
The word cloister comes from the Latin claustrum, meaning an enclosed or locked place, from the verb claudere, to shut. From the beginning the term carried a double sense: the physical courtyard with its walks, and the whole enclosed world of the monastery, the space lay people could not enter. When we say someone leads a cloistered life, we are borrowing the second meaning.
Architecturally, the classic arrangement crystallised in the Carolingian period. The famous Plan of St Gall, an idealised monastery scheme drawn in the early ninth century, already shows the essential formula: a church along one side, and a square cloister against it with the principal domestic buildings — dormitory, refectory, cellars — arranged around the other three sides. That formula proved so practical that Benedictines, Cistercians, Augustinian canons and many others repeated it, with variations, from Portugal to Poland. In most monasteries the cloister sits on the south side of the church to catch the sun, though where terrain, water supply or drainage demanded it, builders happily flipped the plan to the north.
Four walks, four functions
A cloister is really four covered corridors, called walks or alleys, each serving the buildings behind it. The walk against the church was usually the most important: sheltered, sun-warmed in a south-facing cloister, and closest to the choir. The east walk led to the chapter house, where the community met each morning to hear a chapter of the Rule of St Benedict read aloud, confess faults and conduct business. Above the east range typically ran the monks' dormitory, connected to the church by night stairs so the community could descend for the night office without going outdoors.
The walk opposite the church served the refectory, the common dining hall, often with the kitchen adjoining. The west range was frequently given over to storage and the cellarer, the monk responsible for provisions; in Cistercian abbeys this range housed the lay brothers, who had their own separate routines. The result was a supremely efficient circulation diagram: a monk could move from bed to church to chapter to meal to work without ever leaving cover, in an ordered clockwise or anticlockwise round that mirrored the ordered round of the liturgical day.
A place for reading and writing
The cloister was not merely a corridor. In many communities it doubled as the principal working and reading space. The Rule of St Benedict prescribes daily periods of lectio divina, slow meditative reading of scripture, and the walk beside the church — with its good light and shelter — was the customary place for it. Book cupboards were often built into the wall between cloister and church, and in some houses a small library room opened directly off the east walk.
In later medieval monasteries, especially in England, individual study booths called carrels were installed against the windows of the cloister walk: small timber enclosures where a monk could read or copy texts with a degree of privacy. Where a monastery had no separate scriptorium, manuscript copying could take place here too, which is a sobering thought in a northern winter — one reason many later cloisters were glazed. Silence was the rule; necessary communication happened through an approved sign language or in designated parlours, rooms whose name comes from the French parler, to speak.
Water at the corner: the lavabo
Practical life clustered around water. Near the entrance to the refectory stood the lavabo or lavatorium, a washing place where monks cleaned their hands before meals — an act with both hygienic and ritual weight, echoing the priest's washing of hands at Mass. Sometimes the lavabo was a long trough recessed into the cloister wall under an arch; sometimes it was a freestanding pavilion projecting into the garth, a small polygonal fountain house with a basin at its centre. Cistercian abbeys were especially fond of the pavilion type, and several survive in France and elsewhere as some of the loveliest small structures of medieval architecture.
Nearby, a towel cupboard held linen, and the ritual of the maundy — the washing of feet, whether of brethren or of the poor — could also take place in the cloister. All of this depended on serious hydraulic engineering: monasteries piped spring water considerable distances, and the cloister was often the distribution hub of the whole system.
From Romanesque arcades to Gothic tracery
The architecture of cloisters tracks the whole development of medieval building. Romanesque cloisters, from roughly the eleventh and twelfth centuries, favour low arcades of round arches carried on paired colonnettes, their capitals carved with foliage, beasts and biblical scenes. The cloisters of Moissac in south-western France and Santo Domingo de Silos in Spain are celebrated for sculpture of this kind, effectively stone picture books unfolding around the walk. In Sicily, the cloister of Monreale adds glittering mosaic inlay to its columns.
The Cistercians, committed to austerity, stripped the ornament away but kept the form, producing cloisters of severe and beautiful plainness at abbeys such as Fontenay in Burgundy and Le Thoronet in Provence. Gothic builders then opened the arcades into large traceried windows, vaulted the walks in stone, and in the later Middle Ages often glazed them against the weather. The cloister at Gloucester Cathedral in England, remodelled in the fourteenth century, is famous for containing some of the earliest fan vaulting anywhere — proof that this supposedly humble corridor could carry the most inventive architecture of its age.
The garth: green void, deep meaning
At the centre of it all lies the garth, the open courtyard the walks enclose. Usually it was simply turfed, sometimes crossed by paths meeting at a well or fountain, occasionally planted or used for burials of members of the community. Its emptiness was part of the point. Medieval writers read the cloister allegorically: a foretaste of paradise, an enclosed garden echoing the hortus conclusus of the Song of Songs, a square of ordered calm at the centre of a disciplined life. Whatever a modern visitor makes of the theology, the effect is undeniable — light falling into green stillness, framed on every side by rhythmic arches.
Not every order used the form identically. Carthusian monasteries, built for hermit-monks, developed the great cloister as a vast court ringed by individual cells, each with its own small garden, so that the walkway connected solitudes rather than communal rooms. Friars in towns squeezed cloisters into tight urban plots. Cathedral and collegiate churches borrowed the form for their canons. The cloister proved endlessly adaptable, which is why you find it from Lisbon to Bergen.
Explore on the map
The best way to understand a cloister is to stand in one — or in the grass-grown outline of one, reading the ruined walls like a floor plan. Hundreds of monasteries, abbeys and priories with surviving or excavated cloisters are plotted on our interactive map, from complete Romanesque masterpieces to windswept foundations where only the garth remains. Pick a region, find a site near you, and walk the four alleys yourself; once you know the logic of church, chapter house, refectory and lavabo, every ruin starts to speak.