Christian monastic architecture

300px|thumb|upright= 1.5|The cloister at Salisbury Cathedral, England

thumb|14th-century lavatorium at Gloucester Cathedral A lavatorium (plural lavatoria), also anglicised as laver and lavatory, was the communal washing area in a monastery, particularly in medieval abbeys and cathedral cloisters. Monks were required to wash before meals; thus the lavatorium was typically adjacent to the refectory.

thumb|500px|Plan of Grey Abbey, Down|Grey Abbey in [[County Down, Northern Ireland. Note the calefactory in the southeast corner (upper right on the map).]] The calefactory (, also warming house) was an important room or building in a medieval monastery in Western Europe. In the present day it is a communal place of recreation and fellowship in religious houses such as monasteries, priories, and convents.

right|thumb|The cellarium of Fountains Abbey, England A cellarium (from the Latin cella, "pantry"), also known as an undercroft, was a storehouse or storeroom, usually in a medieval monastery or castle. In English monasteries, it was usually located in or under the buildings on the west range of the cloister.