Ooh, pretty. One of my local parks has one. I built an herb spiral once with a pile of bricks I had lying around. It was similar to a labyrinth but smaller with a hump in the middle, and it was nice because it covered up an ugly tree stump. I ended up taking it down because it was too hard to mow around and quickly became a creeping charlie spiral. It was fun and good exercise to build, and that was in the pre-kid days when I had more time.