Centralia Outlets is located at the midway between Seattle, WA, and Portland, OR , in Lewis County, the “Gateway” to two of the state’s major attractions. Mt. Rainier and Mt. St. Helen’s. Mt. Rainier and Mt. St. Helen’s National Volcanic Monument are easily accessed from Highway 12 in the east end of Lewis County. Centralia and Chehalis cities have historic downtown areas, museums, vintage homes, steam train rides and more than 350 antique dealers in the three antique malls and nearly 20 shops.