was raised to the episcopal dignity. He was the Bishop of Albi, and an especially special advisor to the King of France Louis XII. He is also the author of a number of treaties. With support from De Seyssel the people were able to build a collegiate church, with a chapter of twelve canons, commissioned by a dean, whose appointment was returned to the count. A church was built on the nearby square of the cemetery, which included a choir of flamboyant Gothic style. If the choir belonged to the collegiate church, the nave belonged to the parishioners and presented a more plain appearance. Besides, the poorly constructed roof collapsed in 1644. Among the side chapels, one was reserved for the De Seyssels of Aix, in which is buried their dead. The collegiate church, fully a parish church after the Revolution, was demolished in 1909, after the construction of the new church. This church was known to house a relic of the true cross, which had been worshipped from a distance. It is also at the end of the Middle Ages that the stately Château of Aix was rebuilt. The ceiling of the Great Hall of the ground floor is dated to 1400. The magnificent staircase of honour was built around 1590. During the 18th century On 9 April 1739, a huge fire broke out in the town centre and destroyed 80 homes, nearly half of the town. Reconstruction was made with appeal for subsidies from the king, who imposed an alignment plan whose implementation was entrusted to the engineer Garella. This plan went further than a simple plan of reconstruction since it provided a true alignment of streets, and imposed some rules of urbanism as, for example, the construction of houses of two floors and a ground floor; it also prohibited thatched roofs. However, it was very limited in its scope since it concerned only the burned area or the main street (Rue Albert I), the central square (Place Carnot) and Rue des Bains. At the beginning of the 17th century, the Aix people and the medical world had begun to become aware of the value of the hot springs of Aix, through the writings of the dauphinois physician Jean Baptiste Cabias, who was followed in this area by other renowned doctors. Indeed, since ancient times the exploitation of sources of hot water had never been completely forgotten. Bathing