I was so afraid that this tree would not be sturdy and would be cheap in appearance - the price was too good to be true. I was so thrilled when it came and it was even better than I had hoped. The 'house' on the bottom is huge - it fits 2 grown cats comfortably it is very heavy and doesn't teeter one bit when our 13 lb. cat jumps and claws and rolls all over it. My two babies love their tree - I am so happy I found this website!