The living root bridges of the Khasi have lived rent free in my head for more than a decade. This book compiles the experimental work of some German academics who are inspired by those same bridges, and a slew of other past and contemporary efforts (both realized and speculative) to blend arboriculture and architecture into a new field all its own. If you've ever wanted to grow a house made of living trees like an elf from dwarf fortress, this book is a wonderful guide to striking the balance between what can be imagined and what one may be able to achieve within the limits of plant biology. It gets a bit technical, but I believe the authors do a good job of explaining the relevant plant biology in an accessible way, and there are many simple and stylized diagrams that explain key concepts of growth dynamics.