Photographer Piet Niemann re-visited the site of Expo 2000 in Hanover 20 years later, and documented its current state in a comprehensive body of work. Sustainability and the successful development of the exhibition site into a "city of the future" are often promised by politicians-similar to the Olympics. But is this actually the case? After a period of 20 years, it is interesting to find out what has remained and been delivered from these often full-bodied promises-or not. The project was honored at the European Architectural Photography Prize 2023 and received a bronze medal at the German Photo Book Award 24|25.