Cities all over the world face complex and rapidly evolving challenges. The series City Talks, organized in cooperation with the Austrian newspaper Kurier, is a high profile forum for addressing these challenges. Mayors of important international cities are invited for a keynote speech on the future of their city, related challenges and political solutions. Former guests included Dragan Djilas (Belgrade), Milan Ftánik (Bratislava), Olaf Scholz (Hamburg) and Rafal Dutkiewicz (Breslau).