This Thematic Group aims at fostering new ideas and ways of understanding urban futures. In this sense, we encourage to consider the possible evolutions of some environmental, technological, political, social variables or conditions in the very long term and, subsequently, envision specific urban scenarios at the local, regional or global scales. These scenarios can refer, for example, to the impact of radical climate change (flooding, extreme scarcity of fresh water in given regions), pervasiveness of smart technologies or security measures, dismantling of statehood, radical modifications in current geopolitical order, massive migrations or other similar changes.