The Upper Austrian State Library was expanded at its traditional location in downtown Linz and converted into an open access library. For this purpose, the listed old building from the 1930s was renovated and a six-story new building clad with natural stone was erected at the rear as a perfectly fitting addition. The former courtyard became the spacious, light-flooded heart of the new library. A large part of the magazine inventory is located in the basement of the new building, the administration received rooms in its tower lantern. In a second construction phase, an enlargement of the open access area and the installation of a reading terrace are planned.