After the death of artist Georges Vantongerloo, the famed architect (and polymath) Max Bill took over part of his archive, including scores of models. Bill’s son, Jacob Bill, is now the trustee of this collection, and in this essay he describes the character of the models. Vantongerloo was a member of De Stijl. In his work, by embracing imagination and making use of the specific design perspective and formal idiom advocated and prescribed by De Stijl, Vantongerloo displays the interchangeable relationship between sculpture, furniture, house and airport, for example. Because the model is in a certain sense without scale, it makes it possible to interpret objects in different ways – specific indications in the models, however, identify them as furniture, house or airport.