ICLEI cohosted this side event “Social Innovations and Civic Engagement—City as Living Lab” at the 2019 Smart City Summit and Expo, Taipei. Participants from local governments learned about the smart city model of inclusive, ambitious climate action, mainstreaming public participation development strategies and creating new local leaders. Additionally, the event discussed how to test new ideas and co-create effective solutions in a Living Lab using agile methodologies. From idea identification to conceptualization and from rapid prototyping to testing, combining the Living Lab way of working and citizen engagement in a learning-by-doing approach shows great promise for inclusive city development.