Brecon Beacons National Park From the depths of its caves to the grandeur of Pen y Fan and Cribyn, its highest peaks, there’s plenty to explore in this gem of a national park. All about Machynlleth Henry Widdicombe’s guide to Machynlleth in Mid Wales. Things to do in Powys Heritage, landscapes, relaxation and fun! 5 things to do in Brecon Punch Maughan, Brecon Beacons Tourism Ambassador, shows us Brecon’s best bits. Brecon Beacons adventures Ten inspirational ideas to get active in the Brecon Beacons National Park. South Wales history The Big Bang, castles built on shifting sands, the rise of industry and the call of the collieries. Brecon Beacons by bus Follow the River Usk from Abergavenny, through Crickhowell, Tretower and Talybont-on-Usk. South Wales history The Big Bang, castles built on shifting sands, the rise of industry and the call of the collieries.