This vocational school underneath Mount Virgl in Haslach was created through a competition in 1975. The compact building complex comprises four units: the three-part office and classroom wing, the two wings of the workshops, the auditorium and the gym. The concrete construction with exposed brick infill forms a very sustainable structure for which an expansion program was developed in the 1990s, which led to the addition of another story onto the previously built three-story class and office building. On the ground floor a meeting room for 150 people was built, with foyer and control room. At the same time, the technical infrastructure – heating, sanitary facilities, water treatment system with solar collectors – was renovated and upgraded. The addition of the new story matches the existing building structure, but is clearly recognizable as an extension.