Our involvement on this project started during the competition phase. We worked with OMA architects in Rotterdam to help them develop a new university campus building typology which achieves high energy performance by utilizing synergetic interactions between the various uses while creating a new form of campus space under a “climate envelope”. The building comprises teaching spaces, laboratories and offices, all enclosed within a climate envelope so that the in-between spaces form an indoor campus. Within the hall under the climate envelope, composed of a PTFE foil roof and glass façades, a macroclimate is created, largely by passive means, which is not as closely controlled as the internal environments within the laboratories and the offices. The roof design reacts to the requirements of the various spaces below by combining highly insulated opaque areas with transparent areas and optimizing their placement and distribution to reflect the distribution of the building program in the hall. The hall is a transitional space between the internal and external environments, supporting and enhancing the campus atmosphere and informal communication. The concepts developed work in the completed building to enhance both communication between people and synergetic energy flows between the many diversified uses under its roof, transferring surplus heat from the laboratories to spaces which require heat such as the offices.