The cat tree was easy to put together.  I have two furry beasts one far larger than the other he is skid-dish about going to the higher levels.  There is a little wiggle when everything is put together (I have mine in a corner) The top perch is pretty small about 1 foot square. Over all I am happy with the purchase, the fur is very soft, I got it in Black and it looks very nice in my grey den.