Chartres Cathedral is a working building and a place of worship. Normally, the nave of the cathedral is lined with chairs and most of the labyrinth is subsequently obscured. It has long been the tradition at the cathedral to remove the chairs and uncover the labyrinth, to allow it to be walked, on midsummer day, June 21st. In recent years the cathedral authorities have also instigated a program of regularly uncovering the labyrinth every Friday during the summer months - typically from the first Friday following Lent, until the last Friday in October. However, this schedule is always subject to change, and special services, funerals and events within the cathedral can result in the labyrinth remaining covered. Essentially, the best advice is to go on a Friday during the summer, or on midsummer day, and if you can, plan to get there early, before the crowds on the tour buses arrive, or otherwise late in the afternoon when they leave and the cathedral becomes a little less crowded. But bear in mind that finding the labyrinth uncovered is never guaranteed - you make the pilgrimage and take your chance! And if you go there, and get the chance to walk in the footsteps of countless others that have followed the path of the labyrinth, please respect local customs and behave in a dignified fashion - this is a place of Christian worship.