By utilizing corner walls for structural backing, the tower occupies minimal floor footprint while offering 4 vertical levels of climbing platforms, internal ramps, and lookout windows. The color palette features clean white-painted cardboard faces, natural kraft interior walls, and grey felt shelf lining.

Step-by-Step DIY Assembly

  1. Construct 90-Degree Corner Spine: Join two long cardboard panels at a strict 90-degree right angle to form the rear corner spine.
  2. Install Triangular Corner Shelves: Glue double-layered triangular cardboard shelves horizontally inside the spine at 12-inch vertical intervals.
  3. Cut Alternating Floor Steps: Cut offset circular climbing hatches into the corners of alternating shelf levels.
  4. Attach Curved Front Facade: Wrap a flexible corrugated cardboard sheet across the front face, cutting window arches on each level.
  5. Line Shelves with Felt: Glue self-adhesive non-toxic felt pads onto every shelf level for non-slip feline traction.