A society for friends of the Berggruen Museum (Förderkreis Museum Berggruen e. V.) was founded at the same time, with members including Berggruen's widow Bettina, his children Nicolas, Olivier and Helen, as well as Michael Blumenthal, Michael Naumann and Simon de Pury.
British Museum | Museum of Modern Art | Metropolitan Museum of Art | American Museum of Natural History | Victoria and Albert Museum | Natural History Museum | San Francisco Museum of Modern Art | Honolulu Museum of Art | museum | Whitney Museum of American Art | Museum of Fine Arts, Boston | Los Angeles County Museum of Art | Solomon R. Guggenheim Museum | National Air and Space Museum | Brooklyn Museum | National Baseball Hall of Fame and Museum | Hermitage Museum | National Museum of Racing and Hall of Fame | Museum of Contemporary Art | Field Museum of Natural History | Philadelphia Museum of Art | Imperial War Museum | Smithsonian American Art Museum | National Museum | National Museum of Natural History | Museum of Fine Arts, Houston | Denver Art Museum | Cleveland Museum of Art | Museum of Contemporary Art, Los Angeles | National Maritime Museum |
Since 2000 he worked as author and curator for several museums and international art projects, amongst them the legendary Heinz Berggruen Collection and the Ethnological Museum of Berlin.