Staatsbibliothek (State Library) Unter den Linden, Berlin, Germany

DELTA^®-TERRAXX - a high-performance surface drainage protecting the world cultural heritage in Berlin: At the foot of the monumental glass cube that houses the reading room of the Berlin State Library, an open area with paving was created, including two underground vault floors. The library's most valuable treasures are stored here on around 3,000 sqm: from preserved manuscripts by Johann Sebastian Bach to autographs by Goethe and letters by Albert Einstein. Here, the product DELTA^®-TERRAXX was installed under the paving in order to prevent waterlogging in the pavement structure.