[1] As a province, San Antonio is a second-level administrative division, governed by a provincial delegate who is appointed by the president.

[1] San Antonio Valley is a small wine region known for producing Pinot Noir, Sauvignon Blanc and Chardonnay.

It is located very close to the sea around the city of San Antonio, Chile, south of the Casablanca Valley and only 55 miles (90 km) west of Santiago.

Soils are in the valley are granitic, poor and well drained with a topsoil of clay, providing a good substrate for vines.

[4] Rains are concentrated mainly in the winter season and the vineyards require drop irrigation for the rest of the year, using water from the Maipo River.