Active Rooftops South Europe (aRTes) is a European research and innovation project aiming to transform underutilized urban rooftops into multifunctional, accessible, and climate-resilient spaces. With a strong focus on cities in Southern Europe, aRTes combines physical solutions, such as modular raised floors, photovoltaic pergolas, and inclusive rooftop access, with digital tools for co-design and stakeholder engagement. The SURF Lab at the University of Cyprus contributes to the project’s participatory design methodology, rooftop transformation scenarios, and stakeholder engagement strategies. Through real-world pilot sites and community-based co-creation processes, aRTes seeks to unlock the untapped potential of rooftops as infrastructures for sustainability, social inclusion, and urban regeneration.