Tunuyán is a city in the west of the province of Mendoza, Argentina, located on the western shore of the Tunuyán River, 80 km (50 mi) south from the provincial capital Mendoza and 100 km (62 mi) east of the Chilean border. It has 42,125 inhabitants as per the 2001 census [INDEC], and is the head town of the Tunuyán Department. Along with the Tupungato Department and the San Carlos Department it makes up the "Valle de Uco" region, which is famous in the Argentine wine industry for its important and modern vineyards and winery's. Recent investments attracted by the climate, soil, and altitude combination have transformed the area since 2002, making it one of Argentina's most important regions when it comes to high-quality wine production.