Essay on the five-aisled building added to the west end of Durham Cathedral by Hugh of Le Puiset, bishop of Durham 1153-1195. Argues that the Galilee, a fine example of northern English Transitional architecture, had combined uses, housing a permanent Lady altar, an occasional ecclesiastical court and a marshalling point for assembling processions on Sundays and Feast Days. Analyzes the stylistic links with York architecture of ca.1160-1180, particularly the severe waterleaf design for the capitals and the arcade moldings with rolls and chevrons. Investigates the structural history, and argues that the twin marble shafts were augmented when they were built ca.1175 (and not during the major alterations of ca. 1430), by the addition of freestone elements forming a four-shaft pier. -- AATA