I am amazed at how much our cat loves her tree! She has managed to climb from the floor all the way up the sisal post to the top shelf without using any of the other shelves! It loves to jump on and off, run from level to level, and just sit and watch the world go by.  My daughter is sad because the cat doesn't sleep with her as much anymore...she's always on her perch. 

My only complaints:
The house at the bottom is a little pointless. Our cat has never even gone in, let alone slept in it. I am having a hard time finding replacement hanging toys (since the ones included are "display only"), and the color of the faux fur is lighter than it appears in the picture. I would call it more of a caramel than a true brown.