After the box arrived, our little kitty was interested, as if she knew this big box was just for her. I immediately started opening it, with her help of course.. I wish I had a cam corder at that time!! she and I tearing and ripping the box together. Then, she had to "help" take it out of the box! she was so excited!! As it was getting put together, she and our other kitty was all over it before it was completed!! and once it was all up, vwal-la, there was their new kitty playland! overall it is quite sturdy. One tier/shelf with the rope hanging off it had to be retightened, and in doing so, we put brackets to attach it to the legs. Now it's perfect! Our kitties love it and are playing or sleeping on it all the time! thank you! We love it and it's perfect!