Vouvray (wine) blanc grape, known locally as "Pineau de la Loire", is believed to have originated in the Anjou wine region sometime in the 9th century and from there eventually migrated to Vouvray. In the 16th and 17th century, Dutch merchants oversaw the plantings of many vineyards in the area to be used for wine trade with markets in London, Paris and Rotterdam. Grapes from all over Touraine were brought together in a mass blending labeled simply as "Vouvray". Wine cellars were built in the region from caves created from the excavation of tuffeau rocks used to build the Châteaux of the
Loire Ocean) at Saint-Nazaire. Its main tributaries include the rivers Nièvre, Maine and the Erdre on its right bank, and the rivers Allier, Cher, Indre, Vienne, and the Sèvre Nantaise on the left bank. The Loire gives its name to six departments: Loire, Haute-Loire, Loire-Atlantique, Indre-et-Loire, Maine-et-Loire, and Saône-et-Loire. The central part of the Loire Valley, located in the Pays de la Loire and Centre-Val de Loire regions, was added to the World Heritage Sites list of UNESCO on December 2, 2000. Vineyards and châteaux are found along the banks of the river throughout this section and are a major tourist