Laurence Llewelyn-Bowen turns his attention to Glynllifon, an enormous neoclassical mansion near Caernarfon in Gwynedd. He discovers the vast estate was once home to one of the country's most powerful aristocratic families, and meets the couple battling to restore it to its former glory
click here to see where to watch or .
Ready to Watch Hidden Houses of Wales, Season 1, Episode 3?