Much bigger than I imagined. But that's ok. My Siberian Forest cat has her original tree from when she was a kitten. She makes a running leap into it and it moves back and forth. The new tree has a much wider base and is heavier and does not move a bit when she leaps on it. She's like Goldilocks having to test out each sleeping spot. I would recommend it for all cats, but especially for the big ones.