The Southwest Washington Fairgrounds is the largest indoor/outdoor event facility in the area. The fairgrounds offers over 100,000 square feet of multi-use buildings for every type of public and private event. Major amenities include historic grandstands, 2 outdoor stages, large parking and camping areas. Plus barns and buildings suitable for all types of animal events. Conveniently located off the I-5 corridor between Seattle and Portland, the Southwest Washington Fairgrounds is open year-round to serve you.