Green roof

photo by Ballard Avenue

No, it's not the Nebraska prairie. It's the roof of the Ballard Library. It's a "green" roof, covered with sod and plants. It filters the rain water and keeps the building cooler. We'd put one atop Ballard Avenue Tower but the roof's too steep. Green roofs work best when they look like the Nebraska prairie, not the Duquesne Incline.