Twisted board-formed walls turn into stairs and frame a series of experiences in this home that rival organic exterior equivalents – in short: it is a forest within a forest.

High-tech digital modeling gave way to low-tech construction techniques to form these three-dimensionally complex surfaces that define the interior.

A series of conceptual diagrams show from the start what the intended feel was to be in both abstract and concrete terms (no pun intended), ranging from light and bright to dark and cave-like.

The resulting space, despite being confined on three sides, feels remarkably open both to indoor functions and the adjacent outside space. Design by Archi-Union Architects with images by Zhonghai Shen.