Washington Park is a light rail station in Portland, Oregon, United States, that is served by TriMet as part of the MAX Light Rail system. Situated between Sunset Transit Center and Goose Hollow/Southwest Jefferson Street station, it is the 17th and 3rd eastbound station on the Blue Line and the Red Line, respectively. The station's two tracks and island platform are part of the Robertson Tunnel beneath Portland's West Hills. Its head house and surface-level plaza are located in the middle of a parking lot surrounded by the Hoyt Arboretum, Oregon Vietnam Veterans Memorial, Oregon Zoo, Portland Children's Museum, and World Forestry Center. Washington Park is the only completely underground station in the MAX system. At below ground, it is the deepest transit station in North America.