The aim of this article is to trace some lines of thinking towards a conceptualization of the uniqueness of the creative work of museums, the mode of creativeness that belongs exclusively to museums, or at least that museums are capable of by virtue of the types of materials and forms as well as activities unique to what will be referred to as museography. This is linked to the question of what it is that constitutes the uniqueness of museum work as a professional field. The article characterizes the uniqueness of museum professional knowledge primarily in terms of a mode of creativeness, or bricolage in Levi-Strauss's sense, mediated through the museographic form, and applied to the chance assemblies of materials to generate museumspecific modes of engaging questions-across science, culture, and society-particularly through creating unique temporal arrangements, or durations, that provoke thought, learning, and engagement on museographic terms. Museography's originality, it is argued, consists in a bricolage that works through the museum's unique material and form to create learning resources and encounters, museographic assemblages that depart from a conception of linear time as the space of evolutionary narrative to facilitate the experience of Bergsonian durations.