I found these guys at a revamped local shopping area. They are quite big and impressive. Made out of some kind of material which looks like cement, but is smooth with no jagged edges. There's two more just to the right of these, all located on a turf lawn in the middle of a square. Children were playing on the other two. Usually all four are covered with children playing. The only potentially dangerous activity that I've observed is a couple of boys jumping across from back-to-back. There's a good 4 feet of distance between the pairs. Some lessons are hard learned.