Sarzana is 140 cm tall on a base of 50 × 35 cm — narrow enough to sit in a gap most towers cannot use — and it includes something none of the others here have: a tunnel.
A route through, not just up
A tunnel lets a cat pass through the structure rather than over it, and cats use enclosed passages differently from open platforms: they go through them at speed, they wait in them, and they ambush from them. On a tower this narrow it adds a dimension the footprint would not otherwise allow.
Four places to settle
A cave sleeping area, a hammock, a separate cat bed and an elevated observation deck, with a ladder handling the climb between levels. A plush mouse hangs from the frame.
Twenty kilos, total
That is the figure for the whole structure, on a reinforced base. Read it as a tower for one or two cats of ordinary size.
Covering and posts
A soft covering over a pressed-wood frame, with posts wrapped in natural-fibre rope.
Setting it up
Assembly is required, with instructions and the necessary fittings supplied. Use it on a flat surface; at 140 cm on a 35 cm depth, we would place it against a wall.