My husband put it together with no trouble----Oh with the help of the more curious of my 2 cats. They both love it and sleep in it. I was surprised how well it was packed. Nothing damaged. Good packing job. It didn't take long to put together. And it is solid. It is not going anywhere. Obviously they made some changes because some of the reviews I read complained about the top circle. My monsters fight over that one and it doesn't budge.