One of the supportive tubes we received was the wrong size, therefor the platform was crooked.  Our 6 month old kittens weren't impressed with it, and spent very little time on it.  The support tube on top of the "house" part did not hold up the heavy "circle" very well, and after a few months, tore out of the top of the "house" part.  Overall, although when I ordered it, the price was right, after seeing the long term quality of the product, it became totally overpriced.  I wouldn't recommend this Cat Tree.