The building replaces the old main library and twelve branch libraries of the Humboldt University, covering the humanities, economics, social and cultural sciences. Much of the Grimm Zentrum's success has to do with its architecture and interior design, conceived by the Swiss architect Max Dudler. It most unique feature is the main reading rooms, which Dudler has constructed as suspended galleries from each of the five floors above the central area. The combination of warm, dark cherry wood and cool, elegant glass creates an aesthetically pleasing atmosphere in which to work. Every architectural and design detail has been carefully considered. The long rectangular shapes of the windows are repeated in the open wood panels on either side of the reading rooms as well as in the table tops (green linoleum, reminiscent of panes of frosted glass), and even in the rectangular shape of the lamps with their transparent shades.