Abstract: An accessory for domestic cats that provides scratching, climbing, resting, playing, sleeping and observation facilities for the house kept cat that is designed and engineered as a "knockdown" assembly that can easily and readily be erected or disassembled. The main assembly is comprised of several sections and sizes of cylindrical shapes that are attached in-line end to end via internal fasteners that are threaded to prevent accidental separation. Once the sections are fully assembled a drop-in pressure maintaining device that is preassembled is installed at the top end together with a mobile multiple toy holder. The largest diameter assembly serves as the "house" and the roof serves multi-purpose, one, as an observation deck, the other, as an elevated play deck from where the cat can reach and play with toys attached to the mobile multiple toy holder. The bottom of the "house" serves as a mounting for the anchor that suspends other toys between the "house" and the floor.