The first Forum of Mayors organized by the United Nations Economic Commission for Europe (UNECE) will take place on 6 October 2020. More than 40 city leaders from the UNECE region will gather at the Palais des Nations or connect virtually to share their responses to the challenges of urban life. In this context, the famous architect Sir Norman Foster will explain how the current pandemic will accelerate the evolution of our cities. The view of this example of sustainable architecture, the transformation of Berlin's Reichstag Palace entrusted to Lord Foster in 1993, was taken by photographer Chien-Chi Chang in 2004. The Forum will be broadcast live on UN web TV.