After searching every website I could find, and looking at the local petstores, I was finally able to settle on this tower. I have one pretty large domestic cat and a smaller siamese. The siamese is small enough to curl up in the top and she loves it, while the bigger cat comfortably rolls around and lays on the platform. I bought this so that the cats could escape from our english cocker spaniel, and it serves the purpose perfectly. They dont use the basket, its really only big enough for a kitten. However, the little house on the second level is used occasionally.  I would definitely recommend this product!