The choir wall of Chartres Cathedral (French - clôture de chœur or tour du chœur) is a piece of stone architecture and sculpture in Chartres Cathedral, over 6 metres tall and around 100 metres long. It was commissioned right at the start of the 16th century by Jehan de Beauce to keep the laity out of the liturgical choir. It marked a transition between Gothic art and the French Renaissance in what became known as the Louis XII style. Since 1862 the whole wall and each of its constituent parts have been listed as monuments historiques.