Columbia Valley, WA, is Washington State’s largest and most diverse wine region, covering nearly a third of the state. Defined by its arid climate, long sunny days, and cool nights, the valley fosters ideal conditions for grape growing, ensuring balanced acidity and concentrated flavors. Its varied terroir includes volcanic soils, gravelly deposits, and sandy loam, making it home to world-class Cabernet Sauvignon, Merlot, Syrah, and Chardonnay. With over 11 sub-AVAs, including Walla Walla, Yakima, and Horse Heaven Hills, Columbia Valley offers a spectrum of styles, from bold reds to crisp whites. The region’s commitment to sustainability and innovation continues to shape its reputation as a premier winemaking destination.