“…In-depth analyses, case studies, and feedback from researchers were prepared for each of these cities. The study of the documents produced by this project allowed us to identify the different problems related to urban underground spaces and to see how these cities were able to use their suburban data and to integrate them effectively into the process of urban land-use planning [17]. A summary of the analyses of the 12 European cities cases, including Coruña (Spain), Bergen (Norway), Dublin (Ireland), Glasgow (Scotland), Hamburg (Germany), Helsinki (Finland), Ljubljana (Slovenia), Nantes (France), Novi Sad (Serbia), Odense (Denmark), Oslo (Norway), and Rotterdam (Netherlands), is shown in Figure 1.…”