Energy System Models for City Climate Mitigation Plans-Challenges and Recommendations.- Deep Energy Retrofit of Residential Buildings in the Mediterranean Area: the MedZEB Approach.- A Systematic Study of Sustainable Development Goal (SDG) Interactions in the Main Spanish Cities.- City Assessment Tool to Measure the Impact of Public Policies on Smart and Sustainable Cities. The Case Study of the Municipality of Alcobendas (Spain) Compared with Similar European Cities.- Public Research and Development Funding for Photovoltaics in Europe-Past, Present, and Future.- Urban Density and Household-Electricity Consumption: An Analysis of the Italian Residential Building Stock.- A Possible Circular Approach for Social Perception of Climate Adaptation Action Planning in Metropolitan Cities.- A Spatial Multi-Criteria Decision Support System for Stress Recovery-Oriented Forest Management.- Diagnosis of the State of the Territory in Flanders Reporting about New Maps and Indicators Differentiating between Urban and Rural Areas within Flanders.- Co-creation Pathway for Urban Nature-based Solutions: Testing a Shared-Governance Approach in Three Cities and Nine Action Labs.