The new offices for Médecins Sans Frontières are in the Grand-Morillon district in the north of Geneva. The building responds to the needs of an organization that must be able to offer medical aid immediately, specifically and worldwide on a 365/24/7 basis. Professional teams from various fields support specialized forces that provide tailor-made on-site relief for varying lengths of time. As soon as an emergency is resolved, the teams disband and regroup. Such a fluid organism needs an adaptable building: the architecture of the new headquarters in Geneva achieves this required openness and flexibility with its transparent and communicative spatial structure. Spaces of varying proportions accommodate work in large, medium, and small groups with an abundance of interstitial, communal areas on all floors. A generous staircase flows through the entire building, connecting all departments both visually and spatially. Large-format wooden frames with balconies and loggias join together to form a clearly defined volume, while the facade’s vegetation screen helps improve air quality. ‘Cradle to cradle’ production methods ensure that all components used can be easily recycled.