On June 8th, 2018, an interim evaluation of the WIPP project funded by Interreg took place at the Europa-Universität Flensburg (EUF), which was prepared and directed by the professional Kienbaum Consultants International GmbH. Overall purpose of the workshop was to learn from the previous experience of the project partners. Therefore, experiences of former INTERREG projects were summarized and presented by Kienbaum. Accordingly, results of 75 ongoing evaluations are gathered by Kienbaum. so future INTERREG projects can benefit from those experiences. The EUF hosted the meeting and welcomed the project partners in their premises. The discussion board concluded that the competencies of the participating partners and network partners are diverse and adequately represented in order to achieve the project aims. A major interim result was that several regional health care players worked together, who had previously taken care of the health concerns of citizens independently of each other (dissolution of parallel structures). Moreover, with the help of the cross-border WIPP project, the local politics focus on the health situation of older citizens increased. Thus, WIPP makes an important contribution to the promotion of sustainable structures.