The cats love it!  It was slightly damaged  on one corner of one of the shelves.  It was easy to put together and looks great.  It appears a bit like it might not be stable as it moves some with the cats going up and down, but our cat who weighs 14 pounds did not tip it.  We did move it to a non carpeted area and it is stable.  One cat climbs up the poles.  We have 5 cats and four have been on it at a time and there has been no problems with it tipping.  We got it in hopes they would exercise more and oit is getting the job done.