Prussian Cultural Heritage Foundation
The Humboldt Box featured exhibits sponsored by the Friends of the Berlin City Palace () and organizations projected to be housed in the future Humboldt Forum, including the Ethnological Museum of Berlin, the Museum of Asian Art, the Prussian Cultural Heritage Foundation, various departments of Humboldt University and the Central and Regional Library of Berlin. One floor of the building also served as a venue for private events. The Humboldt Box was designed by the architectural firm of KSV Krüger Schuberth Vandreike.