Closest wine region to the city of Santiago. Vineyards stretch eastward from Santiago to the Andes and westward to the coast to form three distinct sectors of the Maipo Valley best known for its well-balanced red wines. Alto Maipo reaches into the foothills and produces some of Chile’s leading Cabernets. Central Maipo is one of the country’s oldest and most diverse productive regions, and Coastal Maipo—a relative newcomer—benefits from the cool maritime influence that slides over and between the Coastal Mountains. Soils here are sandy and gravel to the east, more clay to the west.