Must do in the Valleys A visit tothe South Wales Valleysisan adventure. Discover someof it's topattractions to visit A Big Pit Mining Museum B Afan Forest Park C Cyfarthfa Castle D The Bunch of Grapes E Caerphilly Castle F Sultan the Pit Pony G Waterfall country H Blaenavon Ironworks I Penderyn Whisky Distillery J Brecon Mountain Railway View full list Active in the Valleys Forget winter – it's finally time to get outside and have loads of fun without freezing. Taff Trail heritage Walk or cycle the the Taff Trail taking in pretty castles, Cardiff city and heritage-rich valleys. BikePark Wales BikePark Wales the newest addition to a host of new mountain bike venues and trails in South Wales. A world-famous heritage site Blaenavon’s industrial landscape is a living, breathing reminder of the time when Welsh coal powered the world’s industries.