The building is of significant historical interest as original plans and elevations of the building still survive in the National Archives of the United Kingdom. It was also built in the environs of the site of the Newry Cistercian Abbey founded in the 12th Century. Newry and Mourne District Council have restored and developed the Castle and adjoining warehouse as a new Museum and Tourist Information Centre. This flagship project for Newry and Mourne provides a high-quality, dynamic museum service and acts as a focus for cultural, heritage and tourism activities in the area.