The vocational school I on Rosenheim's Prinzregentenstraße had to swallow a lot of dust and noise, but in the end the four-year renovation and expansion project paid off without interrupting operations. The good investment has practically transformed the complex into a new building and given the previously asphalted campus a major upgrade. The representative surface structure develops from linear structures in combination with organically shaped GDM.SINUS stone interlocking blocks. The further development of the so-called "bone" combines the familiar robustness and stability with increased attractiveness.