A member of the Union des Grands Crus de Bordeaux, Château La Tour de By, owned by Marc Pagès, is located in the Médoc, between the Atlantic Ocean and the Gironde estuary. The vineyard extends over 94 hectares ofCabernet Sauvignon vines (60%), Merlot (35%) and Petit Verdot (5%), with an average age of 45 years on a rump of bass.

The Château produces several red wines including Château La Tour de By, Château La Roque de By and the Héritage cuvée, made from old vines and the best plots of the vineyard, as well as a rosé wine.

Since the 1980s, Château La Tour de By has been promoting ecological agriculture in the management of diseases and pests in order to reduce the use of chemicals as much as possible.