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Jens Aerts

Abstract

This viewpoint reflects on the development and evolution of the Safe and Sound Cities (S²Cities) programme, a global programme initiated and funded by Fondation Botnar and implemented in partnership with diverse stakeholders to foster safer, youth-centred urban environments. Initiated in 2020, the programme emerged from the recognition that youth, safety, and cities are intricately linked, yet often addressed through fragmented or traditional paradigms. This paper traces the early conceptualization process—beginning with a two-day learning workshop that integrated insights from academia and field practice—and describes how this informed a system-thinking approach to urban youth safety and wellbeing, based on a Theory of Change.
Central to the programme is the integration of Relational Wellbeing (RWB), a framework that emphasizes the interconnectedness of personal, social, and environmental drivers of youth’s health and well-being, and the Crime Prevention Through Environmental Design (CPTED) approach, which links urban form to social cohesion and safety. The fusion of these perspectives revealed the importance of placemaking as a process that empowers youth to shape public spaces and build civic trust.
Pilots in 6 cities highlight how youth-led initiatives - supported through digital and physical tools - can drive innovation, build local capacity, and foster inclusive urban governance. The paper argues that safety in cities must be redefined through the lived experiences of young people, advocating for a shift from reactive, enforcement-led approaches to proactive, participatory strategies rooted in placemaking and relational wellbeing.
Ultimately, the S²Cities programme is positioned as a model for youth-driven systemic change, aiming to scale and adapt solutions across diverse urban contexts. It concludes by underscoring the role of youth as co-creators of safer cities and the importance of nurturing environments where their agency, creativity, and resilience can thrive.

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How to Cite
Aerts, J. (2025) “Developing a Global Programme for Safer Cities, from Design to Implementation”, The Journal of Public Space, 10(1), pp. 161–167. doi: 10.32891/jps.v10i1.1876.
Section
Viewpoint
Author Biography

Jens Aerts, Office for Sustainable Land and Urban Management (OSLUM)

Jens Aerts is the founder of the Office for Sustainable Land and Urban Management (OSLUM). His works focuses on city-focused solutions related to climate resilience, green transportation and inclusive urban development. He has 25 years of experience in urban planning practice, policy and research, working with international development agencies, city governments, developers and non-profit organizations.
Jens is the global advisor on placemaking for the Safe and Sound Cities Program. Currently he also supports the EU Urban Development Technical Facility (Ethiopia), the World Bank (Pakistan) and Cities Alliance (Belgium). Previously he led the climate resilience team at Sweco. He also was urban specialist at UNICEF HQ, where he authored the UNICEF publication ‘Shaping urbanization for children’ and assisted the agency in developing urban programs and city-level engagement such as the Child Friendly Cities Initiative.
Jens is a Thought Leader in the PlacemakingX network, a member of the International Society of City and Regional Planners (ISOCARP) and an advisor to the World Resource Institute for the annual Ross Center Prize for Cities. He holds a MSc in Civil Engineering and Architect from the University of Leuven (Belgium) and obtained his MA Urban Planning at Universitas Politecnica de Catalunya in Barcelona (Spain).