The Lakeside Science & Technology Park in the Western part of Klagenfurt represents a platform for co-operation between companies and institutes of the adjacent Alpen-Adria University. In a further step additional educational offers should be explored. Thus, E.C.O. prepared a concept for a „green classroom“, which unites the requirements of a state-of-the-art educational location and the requirements, limits and opportunities of the adjacent Natura 2000 site Lendspitz-Maiernigg. In several interdisciplinary workshops the overall idea of the green classroom was born. Based on the workshop results, E.C.O. finally prepared the concept for the spatial and content-related dimensions of the green classroom.