The Abbey Barn (c.1407-9) stands in the outer precinct of the former Premonstratensian abbey. It is a large aisled barn of 16 bays constructed of major and minor trusses. The principal trusses have arcade posts with arch braces to the tiebeam; while the intermediate trusses have jointed crucks to a stub collar beam (or false hammer beam). Above this level, side purlins are clasped between outer principal rafters and under-rafters, the latter terminating at an upper collar. Above the collars are short king posts with braces to the ridge purlin. This highly unusual framing has given a felling date of 1408/9. The timber-framed walls were mainly replaced by stone, probably shortly after the Dissolution when building stone would have been readily available from the adjacent monastic buildings. http://www.medievalarchitecture.net