Brecon Beacons | Black Mountains | The Castle Inn | Bed and Breakfast | Bunkhouse | Camping - The Castle Inn Bed and Breakfast, Bunkhouse and Camping in the Black Mountains, Brecon Beacons. The Castle Inn is situated the county of Powys, in the Black Mountain, on the Eastern side of the Brecon Beacons National Park. You’ll find us on the A479 between Cwmdu and Talgarth. Tucked under Castle Dinas, which was an Iron Age fort, and then a Norman Castle, the Castle Inn is now the place where you can be fed, watered and rested! Brecon-beacons-accommodation.co.uk~Site InfoWhoisTrace RouteRBL Check Similar Sites: castleinn.biz