This diploma explores a strategic approach to transforming non-protected buildings in the historic city centre of Oslo, Kvadraturen, with the primary goal of further activating the area. It is an exploratory study that relies on a comprehensive understanding of the area to identify common challenges and possibilities. These opportunities will be addressed through simple interventions in a selected group of buildings. My vision is that the principles behind these experiments can serve as examples of transforming other non-protected buildings in Kvadraturen, as well as providing flexible solutions for the more complex, protected ones, which often require a tailored approach. Furthermore, the insights from this diploma could be applicable to other areas facing similar challenges and opportunities.