“Sexual diversity and the city” is this year’s theme and our mission is to address diversity, health and sexuality in the urban context. Why? Over 60% of the current world population live in urbanised settings, places where a large portion of the STI epidemic is also focussed. At the same time, urban environments offer networks, infrastructures, multidisciplinarity and creativity from which solutions can emerge. Cities can act as giant outdoor labs, experimental sites, research incubators and ideal environments for the implementation of interventions.