This tree is great! It did take about 45 minutes to assemble though, partially due to wrangling cats.  They were already climbing into the cubes while I was assembling it, they couldn't wait to start playing on it. I ended up reversing the top two tiers since my 13 year old cat was too unsure to jump all the way to the top, and the 4 year old (pictured) is very agile and the only one interested in the hammock. Highly recommend!