The Point Defiance Zoo in Tacoma is a smaller zoo but that does not mean it is not an amazing zoo. In many ways it makes it easier to get around with children. A beautiful location and plenty to and see and do including the play area. I would recommend a membership if you live close by, as I would visit this on a weekly basis when my children were younger.
1556 Market StTacoma, WA 98402
2940 Limited Ln NW Ste AOlympia, WA 98502
4516 15th Ave NESeattle, WA 98105