This cat tree was very easy to put together and well made.  The only thing I would change is, the top bed is only about 12 inches inside and needs to be larger.  When we got this tree, our Birman cat was a kitten and now she is full grown.  When she sleeps in the top bed, her legs will hang out over the edge.  Time for an updated model or will have to made a bigger top bed my self.