The Aconcagua Valley stretches across central Chile, approximately 100 kilometers north of Santiago, extending from the Andes Mountains in the east to the Pacific Ocean in the west. This transverse valley takes its name from the Aconcagua River and represents one of Chile's most geographically diverse wine regions, encompassing three distinct climate zones that range from cool coastal areas to warm inland sections.

The valley's climate varies dramatically from west to east due to the influence of ocean breezes, morning fog, and elevation changes. The coastal areas experience cool, maritime conditions ideal for white varieties and Pinot Noir, while the middle section around the town of San Felipe provides a moderate climate. The eastern sector near the Andes receives less ocean influence and experiences warmer, drier conditions with significant diurnal temperature variation due to altitude.

Red Bordeaux varieties dominate the warmer inland areas, particularly Cabernet Sauvignon, Merlot, and Carménère, often blended with smaller proportions of Malbec and Petit Verdot. The region has gained recognition for producing structured, age-worthy red wines that benefit from the valley's rocky, alluvial soils and intense sunlight. Premium producers have established vineyards at various elevations and microclimates, creating complex blends that showcase the valley's diverse terroir.