Plattner contributed more than €20 million which enabled reconstruction of the historic exterior of the Stadtschloss (in Potsdam), which had damaged during World War II and demolished in 1959. At the time, it was the largest donation ever gifted in Germany by a single individual. Plattner signed The Giving Pledge in February 2013. He also helped in the establishment of the Museum Barberini, which from January 2017 on will exhibit Hasso Plattner’s collection of artworks from the former German Democratic Republic and as well as special exhibitions.