Together, we want to climb onto the roof of the bank building in Rosenstrasse, because it is impressive on several levels: The combination of photovoltaic system and green roof helps to cool the microclimate, particularly in the densely populated city center, while the energy generated is used to operate the building itself. At the same time, the redesign of the inner courtyard has created new green open spaces that are used as places to rest and take breaks. A successful example of climate-adapted refurbishment in an existing building.