Private museums like the Menil Collection in Houston, the Fondation Maeght in Saint-Paul de Vence, or the Louisiana Museum of Modern Art in Humlebaek have existed for a long time. Over the past decade, many more private museums have been founded all over the world, especially museums of contemporary art. In Athens, Jakarta, Los Angeles, Mexico City, Milan, and Paris major collectors have built or are planning to build large new museums. These projects are often greeted as generous initiatives that combine the presentation of an individual collection with innovative architecture, and offer contemporary art great visibility. Sometimes they are also seen as competitors for the beleaguered public institutions, as both structures vie for funding and to attract visitors. Given this current panorama of growing private initiatives, “The Private Museum of the Future,” following up on the successful publication “Museum of the Future” by the same editors, tackles this central issue in museology and contemporary society.