The Kulturforum (English: Cultural Forum) is a collection of cultural buildings in Berlin. It was built up in the 1950s and 1960s at the edge of West Berlin, south of the Tiergarten, after most of the once unified city's cultural assets had been lost behind the Berlin Wall. The Kulturforum is characterized by its innovative modernist architecture; several buildings are distinguished by the organic designs of Hans Scharoun, and the Neue Nationalgalerie was designed by Mies van der Rohe. Today, the Kulturforum lies immediately to the west of the redeveloped commercial node of Potsdamer Platz.