The Spanish architect Javier Mueller has managed his office in Geneva since 2017. His striving for radical reduction is manifested in timeless architecture that fully exploits its social potential. Subtle measures and the economic application of means creates uncontrived architecture in which the form entirely serves the function and its users' quality of life. One example of such abstraction through rationalisation is the conversion of Duplex B in Bernex. Liberated from all unnecessary elements, this timeless architecture is exclusively defined by geometry, light and spatial proportions. Text in English and German. 39 colour, 9 b/w illustrations