A new, modern office building was constructed in Düsseldorf for the North Rhine-Westphalia Doctor's Pension Fund: the Bonneshof Office Center. Although the new building has striking architecture, the lush greenery, which stretches out on all sides and forms an interesting dialogue with the existing buildings, is particularly eye-catching. A variety of tree species were used to create a canopy, which becomes denser close to the existing buildings and has a more open structure close to the new building. The redevelopment of the outdoor space has resulted in a significant improvement of the green balance, with a focus on sustainability and optimisation of the microclimate.