Although Seattle is one of America's most likeable and vibrant cities, well worth a few days of anybody's time, perhaps its greatest asset for visitors is its proximity to the glorious rural scenery of Puget Sound . The islands here are stepping stones to the Olympic Peninsula to the west, whose mountains are home to rare elk and lush vegetation that merges into rainforest, and whose wilderness beaches have remained unchanged for centuries. The Olympic National Park , which occupies the bulk of the peninsula, is dazzling, and a hike along one of its clearly laid-out trails can be a highlight of any trip. Just make sure that you don't mind the wet, often stormy weather of western Washington, which only offers predictably warm temperatures and blue skies during the summer.
Not quite as rainy as the mountains to the northeast, the southern coast is flatter and more accessible but not as appealing, littered with industrial towns and glum holiday resorts. The nearest worthwhile destination lies a few hours east, where you can marvel at the wasted volcanic scenery of Mount St Helens .
Much drier and more desolate, the sprawling prairie-plateau that makes up most of eastern Washington is a long, slow grind with little of interest, though if a cross-country trek takes you through Spokane , the Grand Coulee Dam is worth a detour. Otherwise you're only likely to come out here if you're traveling the Cascade loop, a memorable 400-mile round-trip through the stunning Cascade Mountains .