Chateau Ste. Michelle is Washington State's oldest winery, located near Seattle. It produces Chardonnay, Cabernet, Merlot, and Riesling, and has winemaking partnerships with two vintners: Col Solare is an alliance with Tuscany’s Piero Antinori and Eroica Riesling is a partnership with the Mosel’s Ernst Loosen. Chateau Ste. Michelle was selected as "Wine Enthusiast" magazine's 2004 American Winery of the Year.