The Deutsches Plakat Museum (German Poster Museum), with around 340,000 posters from the fields of politics, business and culture, has the largest collection of its kind in Europe. Founded as a non-profit society in 1968 and as a museum in 1974, the Theaterpassage has hosted over 150 poster exhibitions since 1983. In 2002 the gallery was closed. Since 2010 the collection of the German Poster Museum has found a home in the spectacular new building of the Museum Folkwang.