How can the mycelial structure of fungi transform architecture and design? This publication examines the potential of resource-efficient biomaterials, taking ecological and economic aspects into account and providing new impulses for material research and application. From building materials to textile applications, scientific insights, technological innovations, and practical implementations demonstrate the new perspectives mycelium, as a growing material, can offer. Essays, case studies, interviews, and visual contributions report on challenges, breakthroughs, and future opportunities – and on how renewable materials can be integrated into circular and sustainable design practices. Including an interview with Merlin Sheldrake Practice oriented case studies and designs Accompanied by extensive visual material