Portland has Burnside and Seattle has the I-5 Mtb park.. built under the freeway it's an urban bike park that you can ride when it's raining. Which is a big plus for here. It's all user built and maintained.The place gets bigger every time I go by there. The first nice day in a while but there was no one riding while I was taking photos. I must be getting old because some of the stunts they have built up make me nervous just looking at them.