The C3L - Center for Lifelong Learning at the University of Oldenburg has been a sought-after provider of academic continuing education programmes, part-time degree programmes and "open university" formats for many years. On 16 and 17 October 2017, we will spend two days "looking into our cards" and offering other and, above all, new players in the field of higher education the opportunity to gain a deeper insight into our work under the motto "Visiting C3L".