Chartres Cathedral is probably the most complete Gothic cathedral in the world. Its two mismatched spires — one plain Romanesque, one ornate Flamboyant Gothic — are visible from miles across the flat wheat fields of the Beauce. The nave is the widest in France at 32 metres, and the stained glass windows, most of them original 12th- and 13th-century work, are extraordinary.
The cathedral has been a major pilgrimage site since the Middle Ages, when it housed the Sancta Camisa, said to be the tunic worn by the Virgin Mary. Pilgrims still come, and the labyrinth set into the nave floor is walked regularly.