Michael Portillo visits the world's first iron bridge at Coalbrookdale, explores the historic Chirk Castle and has a go at making traditional Cheshire cheese.

Michael Portillo explores the Conwy valley, stopping at Britain's first artists' colony at Betws-y-Coed, visiting the Victorian slate capital of Blaenau Ffestiniog and taking a steam train down to the harbour at Porthmadog.