Staatsbibliothek zu Berlin
After German Reunification, the two institutions were formally reunited in 1992. The new West Berlin building and the original East Berlin building became "one library with two homes" and the old State Library was reborn as the "Berlin State Library". From 2000 until 2012 Berlin State Library was refurbished by German architect HG Merz. The destroyed reading room, the core of the building, was replaced by a glass cube.