England, County Durham, Durham, The Keep, Durham Castle.

England, County Durham, Durham, Entrance to Durham Castle.

Ireland, County Tipperary, Cahir, Cahir Castle, General view of castle and surrounding wall.

Ireland, County Tipperary, Cahir, Cahir Castle, General view of castle and surrounding wall with stream running past.

Ireland, County Tipperary, Cahir, Cahir Castle, View through portcullis gate.

Ireland, County Waterford, Lismore, Lismore Castle, A corner tower seen from the castle's Lower Gardens.

Ireland, County Waterford, Lismore, Lismore Castle seen from the castle's Lower Gardens.

Ireland, County Tipperary, Cahir, Cahir Castle.

Ireland, County Westmeath, Castlepollard, Tullynally Castle.

Ireland, County Westmeath, Castlepollard, Tullynally Castle.

Ireland, County Kilkenny, Kilkenny, Kilkenny Castle, View from the south side.

Ireland, County Kilkenny, Kilkenny, Kilkenny Castle with the Rose Garden in the foreground.