monmouth priory, priory street, monmouth, monmouthshire is a building that incorporates the remains of the monastic buildings attached to st mary's priory church. the priory was a benedictine foundation of 1075, and parts of the mediaeval buildings remain. the buildings were substantially redeveloped in the nineteenth century for use as st mary's national school, and now form a community centre. the complex is a grade ii* listed building as of 27 june 1952. it is one of 24 sites on the monmouth heritage trail.