Please note this is a region 2 DVD and will require a region 2 (Europe) or region Free DVD Player in order to play Historian Ruth Goodman and archaeologists Peter Ginn and Tom Pinfold turn the clock back to learn the skills of the medieval castle builders – by joining the largest archaeological experiment in the world Although Britain has some of the finest remaining castles of the medieval period many of their secrets have been lost in time So Ruth Peter and Tom travel to Guedelon in the Burgundy region