Britain's Most Fragile Treasure

Historian Dr Janina Ramirez unlocks the secrets of a centuries-old masterpiece in glass. At 78 feet in height, the famous East Window at York Minster is the largest medieval stained-glass 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.

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  Paul Tilzey

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  Janina Ramirez
  Presenter
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  Tim Ayers
  Self - Centre for Medieval Studies, York
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  Sarah Brown
  Self - Director, York Glaziers Trust
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  Tony Cattle
  Self - Glazier
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  Keith Jones
  Self - Dean of York
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  Richard Marks
  Self - Art Historian
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  Walter Pinches
  Self - Glassmaker
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  Nick Teed
  Self - Senior Conservator
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  Helen Whittaker
  Self - Stained Glass Artist