The juggernaut is the flagship, and it shows. It stacks in multiple hammocks, a sisal scratching pole, floating scratching posts, a bridge across the middle, and a planter shelf for a bit of green. There is enough room and enough different routes that a crowd of cats, or a couple of very large ones, can spread out and never feel boxed in.Movement is the whole point. Cats perch, prowl, and pick their way through the features, and for a gentler climb the escape hatch and roped bridge offer an easier line up. Leaf shelves on the pole add even more branches if you have several cats or a territorial streak to manage. It is built for 16 inch spacing and can be special-ordered for 24 inch, so reach out if your studs differ.The planter shelf ships ready for cat-safe greenery like spider plant, lemon button fern, catnip, cat grass, variegated wax plant, lilyturf, or boston fern. Plants are not included.