Britains Most Fragile Treasure

Historian Dr Janina Ramirez unlocks the secrets of a centuriesold masterpiece in glass At 78 feet in height the famous East Window at York Minster is the largest medieval stainedglass window in the country and it was the creative vision of a single artist a mysterious master craftsman called John Thornton one of the earliest named English artists The East Window of York Minster is far more than a work of artistic genius it is a window onto the medieval world and the medieval mind telling us who were once were and who we still are all preserved in the most fragile medium of all