This rather lovely, sylvan park 7 miles (11km) northeast of Armagh on the River Blackwater contains the ruins of Benburb Castle, a squat fortress-like ruin dating from the Plantation of Ulster in the early 1600s. It occupies an impressive cliffside spot overlooking a gorge. In 1646, an Irish army defeated an Anglo-Scottish invasion force at Benburb, thus ending the brief Scottish bid to rule Ireland. The castle is on the grounds of a Servite priory; admission is free, but you have to arrange in advance if you want to do more than see it from the outside. Call the priory at 028/375-8241 for more information, or contact the nearby Benburb Valley Heritage Centre028/3754-9752), which has exhibits on the history of the area.