Located near Loire, France. Toward the southwest the Paris Basin opens on a group of plains that follow the Loire valley. The hills of this area, such as the limestone plateaus of the Touraine region and the crystalline plateaus of the Anjou and Vendée areas, are cut by the broad valleys of the Loire and its tributaries. The middle Loire valley, which varies in width from three to six miles, is famous for its chateaus and scenic beauty.