Castle Builders. Greenbay Media, John Geraint.
Across Europe, from Carcassonne to Caerphilly, from the Rhine to the Thames, masterpieces in stone draw visitors by the million.
But how were these medieval superstructures built? How were machines and men organised to create such colossal fortifications?
CASTLE BUILDERS is the story of the blood, sweat and vision behind the architecture; of courts and rulers, power struggles, innovation and intrigue.
The three-part series is being made for S4C, UKTV and with the backing of Dutch distributors Off the Fence and the Welsh Government.