The Swiss architect Fritz Haller was the most established system designer in switzerland during the 1960s. His urban megastructures, network structures, geometrical experiments, and particularly his USM Haller furniture collection are a well-known reference in architecture. From current information technology point of view it is attractive for us to re-think and re-interpret Fritz Haller's architectural key concepts, as well as his architectural terminology, such as node, network, or system.