Now in a cat free house, but when we had two of the buggers, they were "blessed" with multiple cat trees. Nothing as elaborate as what you are building, but a few holes and tubes to ponder. Turns out they never bothered with the passages, they just scaled the side, King Kong style, just to reach the coveted top penthouse. I suppose kittens will go ape over all the ambush positions if there are a few of them to form teams!
looking formidable!
Thanks, SplinterGroup. I figure there will be some amount of ignoring of what is plainly the proper way to use the structure. It will be interesting to see how the cats get around on it.
