Sturdy, stylish, and the cats love it
While this was very easy to assemble, it did take a while. I'm pretty handy and I was working at it for an hour. There are a lot of pieces and the cats got involved. That said, our two nine-year old cats are all over this thing, they both weigh 14lbs and the tower can easily take the weight of both of them jumping all over it. They love being up high and are walking up and down the levels in a spiral and scratching and whacking at all the features. I did add a clear, adhesive picture frame/cabinet bumper between the bottom of the high box and the top of the low box; its invisible and provides just a little cushion and extra stability/contact point between these two pieces that would otherwise be about a 1/4 inch apart.