This book has been published to mark the completion of the Enclosed Gardens project undertaken by the Royal Institute for Cultural Heritage (KIK-IRPA), Museum Hof van Busleyden (Mechelen) and the KU Leuven, Illuminare – Centre for the Study of Medieval Art (2014–18). The entries included in this publication were presented during the conference Imaging Utopia: New Perspectives on Northern Renaissance Art. XXth Symposium for the Study of Underdrawing and Technology in Painting (Illuminare – Centre for the Study of Medieval Art (KU Leuven), 11 January 2017, Mechelen).