This is to be a replacement for a very old tree.  It is very easy to put together- - took me less than 25 min to do and that was with 2 interruptions for political calls.  Unfortunately, the kitties haven't seen fit to try it - - guess they liked the smell of the old one.   I laced it with catnip and treats and no go yet.   The carpet on it does have a "new" smell and I'm assuming that is why they haven't gone near it.   My only reason for the 4 stars is that the platforms are a little on the thin side.  My big boy, Tim is well over 20 lbs, I'm hoping that when he decides to try it he doesn't crack the boards.