The un-worked stone becomes the polished diamond. The task for the competition consisted of renovating an existing university library from the 70s. Instead of only cutting the existing concrete elements off of the facade, the floors are also trimmed in such a way to create impetuously forward and backward tilting facades. With this simple intervention, the surface of the facade is unified over the entire building height while the inclined angles create strong relations with the surroundings that could not be more different: