I knew it would be good as soon as I opened the box.  i took it out in one piece!   No assembly required! 
Jade is a older rescued girl!   She liked it from day one.  Jade uses the lower levels as a ladder to the top so she can look out the window.  She had been declawed but she still sharpens her puffs on the legs of the tower.  
It's not a tall tower but works perfectly for our Jade who looks out the window from her loft.