The headquarters of the construction company Blumer Lehmann in Gossau, Switzerland, illustrate the possibilities of contemporary timber architecture. The collaboration between the Stuttgart-based team at ICD and timber construction specialist Blumer Lehmann builds upon extensive research into curved timber structures. In contrast to the orthogonal grid of the overall building, the tapering surfaces of the atrium articulate two distinct spatial expressions. Convex outward-facing walls offer a textile-like softness, while concave intersections generate sweeping ridges that extend vertically through the structure, modulating light and perspective. These elements simultaneously act as a spatial enclosure and a load-bearing system, transferring forces across five floors with a slender 130-millimeter-wall thickness. The stairway of the atrium is integrated within this timber composition, guiding movement while creating balconies and alcoves.