The Inria Project Lab CityLab@Inria which is currently under creation, studies information and communications technology (ICT) solutions that promote social and environmental sustainability and facilitate the transition to Smart Cities. The Lab places a strong emphasis on multi-disciplinary research, integrating relevant scientific and technology studies from sensing up to analytics and advanced applications. The idea is that the research environment will mirror the predicted Smart City Systems of Systems. A central concern of the Lab is running experiments so that we are able to investigate proposed approaches in real-life settings.