Dungeness Sea Spit north of Olympic National Park
The longest natural sand spit in the United States, extending 5 miles into the Strait of Juan De Fuca. It's grown about 15 feet/year for the past 120 years.
Visit nearby Mount Rainier National Park on your Olympic National Park vacation. Or explore some of the nearby state and community parks such as the Dungeness Sea Spit or Cape Flattery.
Have more time? Route your trip to visit North Cascades National Park, Mount St. Helens or Oregon's Crater Lake.