Perhaps the most familiar wine producing region in Oregon, the Willamette Valley is actually a group of distinct AVA's (American Viticultural Areas). This varied area is home to approximately two thirds of Oregon's wineries. Bounded roughly by the cities of Portland in the north and Eugene in the south, the near-idyllic wine growing region is cradled between the Cascade Mountain Range on its east side and the Coastal Range to the west, and produces some of America's most sublime expressions of Pinot Noir and Riesling.