A building that could be erected quickly was required for the duration of the 'Forum Design' event initiated by Helmuth Gsöllpointer. The building has certain similarities with a train. The individual barrel-vaulted halls are arranged like train carriages linked by a connecting bridge route extending on either side from a broader central space. The semi-circular steel structure of the halls is spanned with a white skin made of a synthetic material. Externally the smooth shell forms a protective coat; internally there is a generous amount of brightly lit space with no shadows. A naturally coloured wood floor takes away the blue intensity of the light entering from all sides through the shell.