The structural system is comprised of 10 m tall equilateral triangles. These primary components of the structure consist of glued laminated spruce and fir beams. Eight triangles are assembled into one of altogether four spatial segments. The tower was created by stacking them. Each segment combines two vertical and rectangular sides with two rotated triangles, as well as two triangles inclined outward by 60° and joined to their respective counterparts. On their top, each of the four units features a platform consisting of two horizontal triangles.
The four main segments are built identically. This allows standardising construction elements and connections, despite the complex geometry. The tower is supported by individual footings that include 16 micropiles each, anchoring them in the ground. The timber construction elements were set in the workshop and assembled into the four segments on site. The elements, weighing 35 to 42 t, were lifted into position with a telescoping crane and stacked, complete with stairs, landings, platforms and siding.
For purposes of weather protection, the structure is enveloped in semi-open Scots pine siding, set into the sawtooth grooves of vertical timber posts. Depending on where you look at it from, the facade appears closed or transparent. On each level, two 6 m tall openings were cut into the surfaces with outward inclination. They permit views in all directions and protect the interior from rainfall. On the topmost platform, users can enjoy panoramic views of the forest and the surrounding landscape.
