The most northwest corner of the continental 48 states, Washington's Northwest Quadrant encompasses the Olympic and Kitsap Peninsulas, the Puget Sound, and the San Juan Islands. Dipping its southern tip in is British Columbia's Vancouver Island.

Favorite places to visit in this area include the Olympic National Rainforest, Mt. Rainier National Park, and the city of Seattle. Also found here is the Washington State capital Olympia.