|Birr Castle Demesne - The official site supplies photographs and chronology of the castle, home to Lord and Lady Rosse, which is not open to the public. The early 17th-century castle was built around a medieval gate-house.
||Blarney Castle - Ireland Interactive provides images and brief history of this medieval castle, famed for its Blarney Stone. Visitor information.
|Castles of Galway - Patrick Larkin's photographs of the ancient medieval castles, tower-houses and fortified mansions of County Galway, Ireland.
||Grange Castle - An Irish 15th-century tower house. Photograph, history and information on its proposed restoration.
|King John's Castle - An illustrated history from Earthlore Ireland of the medieval fortress in Limerick built to guard the Shannon frontier. Includes discoveries from 1990s excavations.
||O'Dea Castle - Irish 15th-century castle built by Diarmuid O'Dea in County Clare. Photograph and description of the Battle of Dysert O'Dea. Tripod pop-up banners.
|Swords Castle, Co Dublin - Fiona O'Raw provides history and photographs of the Norman and medieval castle of the Archbishop of Dublin. Also the 9th-century Round Tower. From Around Swords.
||Tynte's Castle - An urban medieval tower house in Youghal, County Cork. An illustrated history, details of its restoration and plans and elevations from owner Daniel McCarthy.