“POST CITY – Habitats for the 21st Century” is the theme of Ars Electronica 2015. The festival is an inquiry into how cities of the future will have to be configured when there are more robots than people working in factories, everything is intelligently interlinked, autos drive autonomously and drones deliver the mail. And what does it mean for future megacities—above all, those on seacoasts—when climate change really does shift into high gear?The rethinking of urban living spaces has already begun—all over the world, people are coming up with exciting ideas for new architectures and forms of social organization that are able to keep up with the changes the next few decades will bring.