The article presents an exemplary process of revitalisation of a historic building, using the example of the conservation of the southern elevation of Wrocław Town Hall. The introduction presents the building - one of the most beautiful Gothic town halls in Europe. Then the current state of research was discussed. The results of interdisciplinary research are presented in the form of historical, iconographic, architectural and conservation (laboratory) research. The results of the research work were the starting material for the conservation and revalorisation project for the southern façade. Two possible options for the façade's revaluation are presented. In conclusion, the selected variant is presented, along with supporting arguments.