Red Burgundy is made of 100% Pinot Noir.
The most famous (and expensive) Pinot Noir wines in the world come from Burgundy in France. The top regions are Côte d´Or (Côte de Nuits and Côte de Beaune) in North Burgundy.
The reason back this success is the unique terroir (limestone) and climate which gives a wide palette of sensory experience (Peacock Tail). This is also the reason why you never find the name of the grape variety (Pinot Noir) on the label, but only the place of production.