Revitalization of cities is a complex concept. In material (traditional) terms, it covers activities supporting the rehabilitation of ‘outdated’ spatial, functional, and building structures of city districts. Since the end of the 20th century, it has included also activities aimed at eliminating undesired socio-economic phenomena, such as social disintegration and marginalization, poverty, unemployment, and crime in city districts considered to be problematic or degraded. Both degradation and revitalization of city districts are often involved in,...