House of Friends Sustainable Living Culture In Buchs (SG CH), the House of Clay combines pioneering architecture with sustainability. Using prefabricated rammed earth elements and recycled concrete (Zirkulit), it sets new ecological standards. The building exclusively uses natural materials, without artificial composites. The House of Wood combines traditional timber construction with modern elements, blending harmoniously into the local environment. Both houses form an apartment and intergenerational building, representing environmental consciousness and a forward-thinking building culture.