Brecon Beacons Mountain Centre which explore the common of Mynydd Illtud beside which the Centre is situated. From the grounds and in particular from the terrace there are good views of the two highest peaks in the Brecon Beacons, Pen y Fan and Corn Du. There is a three-dimensional relief map of the entire National Park and a geological display featuring the various rock types of the area. Short films about the National Park and the Geopark can be viewed in the Centre. A grassed area in front of the building is available for children to play games and for picknicking. Brecon Beacons Mountain
Pen y Clawdd Castle a medieval fortified site rather than a castle. Pen y Clawdd Castle Pen y Clawdd Castle is a ditched mound with a double moat, roughly circular in shape, with a diameter of approximately 28m to 30m and about 2.4m high. The castle is in Llanvihangel Crucorney, about five miles to the north of Abergavenny, Monmouthshire, in south east Wales and lies between the Usk and Monnow rivers. The mound was designated a scheduled monument in 1950 and described as a defensive medieval motte. The castle mound is adjacent to Pen-y-Clawdd Court (a Grade I listed building), a stable and cowshed