Abstract: A wall supported modular cat furniture structure is disclosed comprising a number of interconnecting components such as vertical posts, horizontal platforms, and base coupling which are press-fitted together to form an upright structure characterized by a central support post to which platforms connect and extend outward therefrom. The structure is positioned adjacent a flat wall or a corner wall surface and platform edges are securely attached to the supporting wall giving stability to the structure, added support to the platforms, and effectively restricting the movement of both. The structure, which satisfies the needs of cats to climb, scratch, and perch in elevated places, has carpet, sisal rope or other claw penetrable material covering exposed surfaces. Numerous other advantages are claimed herein including having lightweight, interchangeable components, a variety of height and configuration options, simple construction and assembly, vertical expandability and minimal space requirements for use.