View this page for the family vacaiton ideas in Washington including the best things to do with kis, and hotels family-friendly hotels with family vacation offers. Visit Northwest Trek Wildlife Park or Point Defiance Zoo & Aquarium, Mount St. Helens, Mount Rainier National Park, Olympic National Park, North Cascades National Park, Dig it! The Fossil Workshop, Future of Flight Aviation Center. Attend theatre, and awesome music festivals. Try skiing, snow tubing, and ice skating. For an urban adventure checkout Seattle family vacations.