I actually reviewed this with the cat paw condo.  This is the second cat tree I purchased because my cats love it do much.  I put the second one in another room.  I put this together differently than shown.  I didn't use the small posts and seats because I knew the cars wouldn't use them.  By not putting them on it gave them more platform room.  The use the past forms to stalk one another and play.  This is a great find for the price.