This is a real nice park in Woodinville, WA. There isn't a quarter pipe or anything like that, but its a great street centered park. Don't let the name fool you, this park allows scooters. Theres no cost to ride, and I'm not sure of the hours. Heres a few images from its grand opening.
http://www.ci.woodinville.wa.us/recreation/images/WEB_AllSkate.JPG
http://www.ci.woodinville.wa.us/recreation/images/WEB_BMX Demo090603.JPG
http://www.ci.woodinville.wa.us/recreation/images/WEB_Pro_Skate Demo090603.JPG
http://www.ci.woodinville.wa.us/recreation/images/WEB_AllSkate.JPG
http://www.ci.woodinville.wa.us/recreation/images/WEB_BMX Demo090603.JPG
http://www.ci.woodinville.wa.us/recreation/images/WEB_Pro_Skate Demo090603.JPG