Blaenavon Ironworks and Cyfarthfa Castle

Presenter Victoria Perry looks at industrial heritage sites relating to a traditional primary industry, the iron industry in the northern part of the south Wales valleys. She takes a look around the World Heritage Site at Blaenavon Ironworks, and then goes to Cyfarthfa Castle in Merthyr Tydfil - home of the 18th century ironmasters, the Crawshay family.