The event, organized on World Urban Day, is co-curated by the working group that, under the scientific supervision of Alessandro Balducci, contributed to the realization of the project The Space of Inequalities: Environment, Mobility, and Citizenship as part of the 24th International Exhibition. The format of the event is that of an open dialogue between academics and representatives of cities, metropolises, and megacities from around the world. The day is divided into two parts: the morning session hosts a multi-voiced dialogue between scientific debate and the city in four Urban Dialogues (Socio-environmental and climate inequalities: between international perspectives and local impacts; Mobility and inequalities: challenges for urban and global accessibility; Digital citizenships; Offended citizenship: spaces, services and inequalities in cities); the afternoon is a round table discussion between representatives of international associations of metropolitan areas or bodies that support or promote the strategic role of cities in addressing inequalities.