Sien carried out a feasibility study for the Holocaust Museum in Mechelen, together with Lord Cultural Resources and Kleio Heritage Consultants. We benchmarked four major museums: the Holocaust Museum in Washington, the Jewish Museum in Berlin, the Museum of Tolerance in Los Angeles and the Imperial War Museum in London. The study included an interpretation of the Belgian experience of the holocaust, and the design and overall architectural setting in the listed buildings of the Dossin barracks and the Institute of Arts and Crafts (IKA).