Four wall-mounted pieces create a vertical playground for indoor cats, combining a hammock, a 2-step cat tree, a 3-step stair and a single-layer platform so pets can climb, rest and observe their surroundings. The hammock with faux linen fabric forms a suspended lounge that keeps cats off the floor, while the 2-step cat tree uses sisal-wrapped posts to channel scratching and stretching. The 3-step sisal stairs connect different levels for easier access, and the single-layer platform serves as a stable perch. Non-slip carpet mats with hook and loop fasteners help paws grip each surface, and solid plywood boards with a reinforced triangle structure work with the 22-lb capacity of each layer to support daily climbing and lounging when properly mounted on solid walls.