Takes a while (two people) to assemble, but worth it.  My cat loves to sleep on the top perch.  I keep her 'toys' in the box part and she actually reaches in to get them out on her own.  She's too big to sleep in there.  The only downside is that she's already shredded the sisal rope on the post that she uses most to scratch on.  But eventually I'll swap out that post for one the same size that is still intact. Great tree and good price.