Great cat perch!  Fits perfectly under my windows, so my cat and hang out on the top ledge and watch the birds outside. Not so big that it take up takes up too much space. I like that there are other levels as well...I've seen them as sleeping nooks as well as steps. My cat hasn't discovered the sides as scratching posts yet, but I'm sure he'll get there. A little on the heavy side, but I understand and appreciate that it's there for stability.