Within the architectural design, planning, and construction processes, new valuations and revaluations are constantly taking place. Every decision is made based on existing reference values, even if the respective action is future-oriented and geared towards the creation of the new. At the same time, the preservation or further development of building structures is based on traditional thought patterns and continuously internalized value systems. This means that values are never static, even in building, but are subject to a process. This interdisciplinary volume focuses on processes of value appropriation, value internalization, and value formation. These processes are illustrated using selected examples from the history of building and planning from modern times to the present.