Customize the KittyScape Basic Playscape Kit to create a stimulating playground for your cat. The modular design of this cat tower allows you to put the components together as you wish, plus easily add new accessories to enhance your pet's enjoyment. Assembling in minutes without tools, the KittyScape Basic Playscape Kit includes a basic platform, oval platform, penthouse perch, 5 long columns including 1 seagrass scratching column, 2 short columns, a teaser toy, and multiple connectors. With the KittyScape Basic Playscape Kit, you can place the platforms close together or further apart, depending on the athletic prowess of your cat.The KittyScape Basic Playscape Kit features interchangeable pieces which can be assembled in a variety of different combinations. Add any or all of the following accessories (sold separately) to give your cat the ultimate play experience: Expansion Kit includes oval platform, 3 long columns, 2 short columns, and multiple connectors. Adjustable Scratching Tray connects to any kit; includes replaceable corrugated scratching section. (Refill available.) Fabric Bridge joins 2 kits by connecting 2 platforms at the same or a different height. Penthouse Canopy attaches to the penthouse perch to provide a private space for cats to relax.