Tour guide Felecite Schuler-Lagier shows her phone while using the free artificial intelligence application that tells the story and meaning of the Chartres Cathedral's stained glass windows, in Chartres on October 14, 2025. An application powered by artificial intelligence, touted as a "world first" by its creators, brings the famous stained-glass windows of Chartres Cathedral to life, allowing the general public to discover their secrets using a smartphone. (Photo by JEAN-FRANCOIS MONIER / AFP) (Photo by JEAN-FRANCOIS MONIER/AFP via Getty Images)