 The Boisserée collection, still in the Alte Pinakothek, includes the "Columba altarpiece" (1455) by Rogier van der Weyden (which Boisserée believed to be by van Eyck), "Cardinal Charles of Bourbon, Archbishop of Lyon" by the Master of Moulins, the "Seven Joys of the Virgin" (1480) by Hans Memling, and the "Pearl of Brabant" (1465) by Dieric Bouts the elder.Boisserée spent much of his time campaigning for the restoration and completion of Cologne Cathedral, where construction had come to a halt during the Reformation.Soon after settling in Heidelberg in 1810 he commissioned a survey of the building, and a set of drawings which were eventually published as engravings.