Loire Valley (wine) a variety of limestone with excellent drainage that is known as tuffeau which is the same material used to build many of the famous Loire Valley Châteaux. The area around Chinon, Bourgueil and Saint-Nicolas-de-Bourgueil produces the majority of the Loire Valley's red wine based on the Cabernet franc grape—known in this areas as "Breton". The wines of the Chinon area are the softest and rich expression of the grape while the Bourgueil area produces more tannic and firm wines. The St-Nicolas-de-Bourgueil area produces the lightest colored wines. In the 19th century, the wines of the Chinon area were compared favorably
Centre-Val de Loire Eure-et-Loir, Indre, Indre-et-Loire, Loir-et-Cher, Loiret. An economic development agency, called Centréco, was created in 1994 by the Centre Regional Council of the Centre-Loire valley region (France) to promote the inflow of investments and the establishment setting-up of new businesses French and foreign companies in the Centre region. This ensures a mission of economic promotion, international support to regional companies and enhancement promotion of regional agrofood products via a regional signature, © du Centre. Centre-Val de Loire Centre-Val de Loire (, "Centre-Loire Valley") is one of the 13 administrative regions of France. It straddles the middle Loire Valley in the interior