The first castle on this site, built in 1261, faced its companion, Carlingford Castle, across the mouth of the lough. It was then a two-story rectangular tower surrounded by a curtain wall with corner towers. Very little of that survives; most of what you see is from the 14th century. It served as a royal garrison until it was destroyed by Cromwell’s forces in 1652. Opening times are somewhat unpredictable, so if you want to see inside, call ahead.
Mourne Mountains› Attraction
Greencastle Royal Castle
6.5km (4 miles) southwest of Kilkeel, Greencastle, Cranfield Point, Mouth of Carlingford Lough, Co. Down, BT34 4LR
Our Rating Hours July–Sept daily 10am–5pm. Closed Oct–June Phone 028/9082-3207 Prices Free admission
Map6.5km Mourne Mountains
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.