Among the trail-blazing innovations around the year 1500 was the development of the print into an artistic medium in its own right. Within the shortest of time, Albrecht Dürer not only achieved a hitherto unknown virtuosity in every single printing technique, but also established a large number of new visual genres that considerably increased the field of the visual arts. But while his numerous picture series (such as “The Life of the Virgin”) were new variations on traditional themes, some one-off works have remained a total mystery. These copper engravings, woodcuts or iron engravings, all done in prime quality, often contain depictions that bear echoes of antiquity: the figures appear naked, or dressed with an aura of antiquity, and are portrayed in poses or actions that recall the gods and heroes of classical mythology. And yet these prints can rarely be assigned to a concrete subject. Evidently Dürer was inviting the viewers to open themselves to his mysteries and try their wits at interpreting them, then as now.