Norse cult buildings, hof, grew architecturally out of the same timber long-hall tradition used for ordinary chieftains' farmsteads rather than developing a wholly separate monumental form the way Mediterranean temple architecture did. A hof was typically a rectangular timber hall, sometimes attached to or adapted from a chieftain's own residential hall, containing images or carved representations of the gods honored there, an altar or a ring, described in some sources as worn on the hand of an oath-swearer and kept reddened with sacrificial blood, and space for the communal feasting that accompanied blot sacrifice, since Norse ritual sacrifice typically culminated in the community eating the offered meat together rather than the offering being wholly given over or destroyed.
Because hof construction reused ordinary hall-building techniques and materials, few unambiguous archaeological examples have survived in a form clearly distinguishable from a large secular hall, and the identification of specific excavated buildings as cult sites rather than residences remains an active and sometimes contested area of Scandinavian archaeology, with sites such as those investigated at Uppakra in Sweden offering some of the stronger physical evidence for a purpose-built cult structure.