Digital geomedia empower students not only to describe features of their environment but also to help change it. Geoscience education may therefore help students claim their rights as citizens for a more sustainable future. This paper shows results from a European project financed through the Erasmus+ funding scheme. It is not designed to contribute to the scientific development within spatial education. Rather, it is meant to serve as a best practice example for teachers in Europe for how to connect different school subject areas within one project, in order to describe, analyse and help promote spatial citizenship, largely through the use of geomedia.