The renovation project of the World Health Organization (WHO) Building A in Geneva took place between 2023 and 2024. Hevron intervened on the building envelope by replacing the glazing, aluminium joinery and sun protection, while ensuring locksmith work and upgrading the accesses. This project, carried out in a high-security institutional environment, illustrates the company’s ability to intervene rigorously on sensitive buildings, while respecting high requirements of quality, planning and coordination.