San Juan is a subregion of Mendoza, located in the northwest of Argentina, in the foothills of the Andes Mountains. It is the second largest wine-producing region in the country, and is known for its high-quality wines.
San Juan has a long history of winemaking, dating back to the 15th century when the first vines were planted by Spanish settlers. Later, Italian immigrants brought new grape varieties and winemaking techniques to the area, and the region has since become known for its high-quality wines.