 In the 13th century they fortified the village, and in 1447 they rebuilt the surrounding wall.The current layout of the city center still features an ancient tower in the garden of the vicarage (for a long time a prison) between the delimitation of the medieval village and the remnants of the wall, ; the northern port (restored in the 18th century) and, ensconced in houses, the rue des Halles.The cannons of Saint-Jean held a fortified manor, in the territory of Laye, where Pope Clement V went to repose in 1306, after his coronation in the Church of Saint-Just à Lyon.