On our visit we walked some of the trails and hit up the playground. Where the play equipment is placed you can tell it use to be an old fountain and the kids had a blast walking up the stairs between the two different play areas. The playground is in pretty good shape and in plenty of shade. The park does have restrooms but not down below near the equipment. If you're interested in the play equipment you can either park on Wilson Blvd or park above near the waterpark and walk down the trail.
This nice natural park is great to see amongst the busy area of Arlington and has lots to offer everyone!