We have since purchased a sturdier cat tree. This one wobbles when our kitten hits it at full speed. I hate to think what will happen when she gets bigger. And the platform was never a spot she wanted to curl up on. Our new cat tree has sides on the top platform, and she loves it, so I think she just never felt safe on the top of this one. It was easy to put together, and probably would be fine standing in a corner.