California is known for its world-famous wine regions, including Napa Valley, and is also home to parts of the Columbia Valley.

California, particularly Napa Valley, is one of the most renowned wine-producing regions globally, known for its diverse climate and fertile soil, which contribute to the production of high-quality wines. Napa Valley is famous for its vineyards and wineries, particularly those producing Cabernet Sauvignon and Chardonnay. Although Columbia Valley primarily lies in Washington state, it also extends into Oregon, making both states significant in the U.S. wine industry. While Washington is increasingly becoming known for its wines, California remains the leader in production, with Napa Valley being a central hub of the wine industry.