Our Mom bought us this cat tower about two years ago.  We helped her put it together and are very proud of our tower.  We have it in front of the large living room window and sit on all the different levels to see bugs, birds, dogs, and other cats.  We play with each other on it, we use the posts to scratch and we sleep on it but not always in the same spot because all the spots are great...and we're big boys too!  Mom says happy kitties make for a happy home but all we know is that we love it and use it every day.  Mom also says it's the best thing she ever bought for us but we liked the box it came in too.