This is the world’s biggest archaeological experiment - a 25 year project to build a medieval castle from scratch, using only the tools and materials available in the 13th century. Join Ruth Goodman, Tom Pinfold and Peter Ginn as they travel to Guédelon, in the Burgundy region of France, where a group of archaeologists are attempting to build a 13th century-style castle. This a five-part journey you don't want to miss!