We just got one this summer for Andrew. We got ours at Lowes. We bought a kit and then we bought extras to add to the kit. So we have a tunnel. Andrew will spend forever up there. Also, we have two rockwalls, one is a molded plastic with smaller steps (Andrews) the other has a rope with little ledges to step on (that one is for our girls). We are also going to add a ramp to ours this coming summer. There is a picture attatched.