Rising numbers of staff and member states of the European Southern Observatory (ESO) required an extension of the administrative headquarters of the Garching Research Centre, TU Munich. The existing Fehling+Gogel building built in 1980 comprised segments of a circle in which office units are arranged around open-plan, common-use zones. Auer Weber returned to and re-interpreted this architectural vocabulary for the 270-workplace extension: three circular buildings – amalgamated on the upper floors – accommodate continuous cellular offices at the façade, a conference chamber, a cafeteria and meeting rooms. A large continuous edge cantilever of about 5 m gives the building a perceptible lightness. The sophisticated, efficient loadbearing structure goes hand in hand with the architectural concept and was developed during the competition phase by close cooperation between the two disciplines.
