France, Nov. 9 -- From next week, visitors to France's Chartres Cathedral will be able to plunge into the stories unfolding across dozens of medieval stained glass windows courtesy of a unique AI-driven app.

Launching on 10 November, "Lire les vitraux" (Read the Windows) will decipher the legends and narratives in 60 of the 172 windows that adorn the 13th-century gothic masterpiece.

Initially available only in French, explanations on the app will be offered in English and German from spring 2026 - when developers also hope to expand the technology to cover the cathedral's entire 2,500 square-metre expanse of stained glass.

"You just take a picture of a window, and instantly, you get all the information to understand what's in front of ...