The Habitat 2020 building is envisioned for China, and radically alters our perception of a structure’s surface. The exterior has been designed as a living skin, rather than a system of inert materials used only for construction and protection. The skin behaves like a membrane which serves as a connection between the exterior and interior of the habitat. Alternatively, the skin may be considered as the leaf surface having several stomata, cellular openings involved in gaseous exchange and transpiration in plants.