Beneath the glowing white walls of the Marienberg Abbey lies the somewhat dingier Fürstenburg, built from regional stone in 1278. A collapse of the castle’s keep in 1996 brought about the renovation, including a restructuring and extension, which was carried out in two phases. It began by securing the historical parts of the building and extending the home wing with modern fixtures made from steel and glass in order to provide the old stonewalls with more light transparency. New schoolrooms in the mountain were then constructed outside of the curtain wall to accommodate the increasing number of pupils. It appears from the outside to be a wall one story high made from the same dark stone as the castle. On the inside, the courtyard has been modernized with structural components made of glass and steel and there is a new section of building work climbing up the mountainside, covered in earth and plants. From something old was born something new.