The project is based on the surrounding walls of the old city centre and focused on the „Anatomieturm“ to generate an interface between the actual and virtual reality. One of the reasons for considering the old remains as a starting point is to re-function them and to bring them into the identity of the city. The project propound an idea to provide a participation of the passers-by, to create their own collaborative and manifold perceptions for the city of Jena. This entity is going to take part as a secondary façade and implicitly connote its existence through the language of anatomy. However, this connotation originates from the past of the historical remain; participants will be able to interpret them on their own through forming and deforming the secondary façade.