Caernarfon
S1, E4: Dan Jones is in the heart of Snowdonia, exploring a stronghold built not only as an impenetrable fortress, but as a lavish royal palace fit for a fairytale - Caernarfon Castle. This episode of Secrets of Great British Castles explores the ancient unrest between Wales and England, and to understand it, we need look no further than the castle at Caernarfon.
