David Fisher, former director of parks districts in Minneapolis and St. Louis, will lead a discussion on creating regional greenways systems at Metro's quarterly trails forum April 27. In Minneapolis, Fisher led what urban planner and author Alexander Garvin later called, "the best-financed, best-designed, best-maintained public open space in America." April's forum also features displays and discussions about current and future trail projects, including updates on the Trolley Trail, from Milwaukie to Gladstone, and the Gresham-Fairview trail, from East Burnside to Springwater Corridor.