Castles of Antrim - The Northern Ireland Tourist Board supplies brief histories and photographs of the Norman castles of Carrickfergus and Dunluce. - http://www.geographia.com/northern-ireland/ukiant03.htm
Enniskillen Castle - A 15th century Maguire stronghold that became a military barracks, now housing the Museum of the Royal Inniskilling Fusiliers. Photograph, brief history and visitor information from Fermanagh District Council. - http://www.fermanagh.gov.uk/index.cfm?website_Key=47&Category_key=134&Page_Key=326
Dunluce Castle - A history of the castle, visitor information and numerous internal and external photographs are provided. - http://www.northantrim.com/dunlucecastle.htm