Enter Chartres Cathedral and let your eyes adjust to witness the magical blue light filtering through 12th and 13th-century stained glass windows, the most complete collection in the world. Walk the labyrinth set into the nave floor, following the same path taken by medieval pilgrims (uncovered on Fridays). Climb the north tower for panoramic views over the Beauce plain and get an up-close look at the flying buttresses. Explore the crypt, one of the largest in France, to see the well where druids once worshipped. In the medieval town below, wander cobblestone streets lined with half-timbered houses and visit the International Stained Glass Centre to discover the secrets behind these luminous masterpieces. Before visiting, be sure to verify the cathedral's opening hours and ticket prices online: https://www.cathedrale-chartres.org/en/visite/practical-information/ticket-prices/