Photographer Piet Niemann (b. 1991) re-visited the EXPO-site and documented the current state in a comprehensive body of work, 20 years after the world fair took place. 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? Twenty years later, it is interesting to find out what has remained and been delivered from these often full-bodied promises - or not. Piet Niemann has planned to make a photographic observation of all EXPO sites, twenty years after the world expositions have taken place. Thus, the declared goal is a documentary work that grows steadily, enabling a reflective view of the past and ideally initiates reflections on responsible action in the future. Piet Niemann (*1991, Germany) is primarily an Architectural Photographer, working inter alia for clients like Zaha Hadid Architects or Delugan Meissl Associated Architects. Apart from his architectural work, he has always been photographing long-term personal projects, focusing on societal topics. His personal series of works are characterised by a distanced, sober observation. His work has been exhibited at Venice Architecture Biennale 2018, SARP Pavilion Warsaw, Roca London Gallery, and others. 60 colour illustrations