Sancerre (wine) up the eastern most extension of the Loire Valley. The area is more than 300 miles (483 kilometers) from the Atlantic Coast and the Loire region of Muscadet, and is actually closer to the Champagne wine region than it is to the Middle Loire city of Tours and the Vouvray and Chinon AOCs. The distance from the Atlantic gives this region more of a continental climate than typical of the rest of the Loire with short, hot summers and long, cold winters that may extend the threat of frost damage into early spring. The most dominating geographical influence of Sancerre
Loire of the estuary), and the beaches of Le Croisic and La Baule along the coastline. Its main tributaries include the rivers Maine, Nièvre and the Erdre on its right bank, and the rivers Allier, Cher, Indre, Vienne, and the Sèvre Nantaise on the left bank. The largest tributary of the river is the Allier, in length, which joins the Loire near the town of Nevers at . Downstream of Nevers lies the Loire Valley, a UNESCO World Heritage Site due to its fine assortment of castles. The second longest tributary is the Vienne which joins the Loire at Candes-Saint-Martin at