EOvation City of Future was the second 24 hours marathon of designing products, solutions and services organized in the frames of the international project of European Space Agency – EO ClimLab. This time the theme of the hackathon was related to city of future, in particular ideal future city, recreation area, workplace and playgrounds. Using Design Thinking methodology, satellite data from Earth Observation satellites and creativity, participants were building solutions for sustainable future for us and our future generations. In the frames of this EOvation edition, a special challenge for kids was also prepared. They were given a possibility to build the idea of their ideal payground, as who knows more about what they need than they do.