Washington Tours, Travel & ActivitiesWashington is the Evergreen State and has a lot to offer the visitor, both indoors and out. Seattle is the obvious starting point - most visitors arrive at Sea-Tac airport. From here, it's easy to strike out into the mountains and rain forests of the Olympic Peninsula, head to the rugged coastline or go inland toward the agricultural centers of Yakima, the wine country around Walla Walla or the feat of engineering that is the Grand Coulee Dam.