A dramatic 16th-century O'Donovan clan tower house, blasted apart by Cromwellian cannon and now a brooding, free-to-visit ruin perched on a rocky outcrop above the River Ilen in West Cork.
A waymarked 11 km (4-hour) strenuous loop starts at the castle car park. It climbs Mullaghmesha Mountain (494 m) for sweeping views over Bantry and Dunmanus Bays, passes Coomanore Lake, then returns by the old bog road. Follow the dark-blue arrows.
Low morning or late-afternoon sun catches the limestone walls beautifully. The castle's isolated setting against the backdrop of Mullaghmesha makes it one of West Cork's most photogenic ruins — bring a wide-angle lens.
Walk up to the imposing four-storey tower and step into the entrance hallway. The upper floors and spiral staircase are gated shut for safety, but you can peer up at intact fireplaces and see the machicolation (stone box) above the doorway, the surviving bartizans at the corners, and the huge blast scar where Cromwell's soldiers blew out the south-west corner in the 1640s.
A rare archaeological feature sits just west of the tower — a medieval kiln with a fire-pit and capstone used for drying grain, contemporary with the castle. Look for the information board on site.
The grassy grounds around the castle make a peaceful spot for a picnic. There are no benches, so bring a blanket. The river runs just below the rocky outcrop and there are rope swings by the bridge for children.
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