There is no where for my cat to jump up to the top and sit on one of the three posts. The circular hutch in the middle below the circular hammock, does not sit out farther then the bottom or top pie piece. My cats have to jump on something else to jump to the top.
Even if there was a hole they could jump through to get to the top or some platform that sticks out farther.
Other than that, this is an awesome cat tree. Wish the circular hammock was a little deeper.