Loire Valley In 2000, UNESCO added the central part of the Loire River valley to its list of World Heritage Sites. The valley includes historic towns such as Amboise, Angers, Blois, Chinon, Montsoreau, Orléans, Saumur, and Tours. The climate is favorable most of the year, the river often acting as a line of demarcation in France's weather between the northern climate and the southern. The river has a significant effect on the mesoclimate of the region, adding a few degrees of temperature. The climate can be cool with springtime frost while wine harvest months may have rain. Summers are hot; however, influences
Loire Nivernais. The monarchy of France ruled in the Loire Valley for several centuries, giving it the name of "The Valley of Kings". These rulers started with the Gauls, followed by the Romans, and the Frankish Dynasty. They were succeeded by the kings of France, who ruled from the late 14th century till the French Revolution; together these rulers contributed to the development of the valley. The chronology of the rulers is presented; in the table below. The source of the river lies in the eastern Massif Central, in springs to the south side of Mont Gerbier de Jonc at .