Eranos was a kind of intellectual retreat center at the villa of Olga Fröbe-Kapteyn in Ascona, Switzerland, that hosted a set of annual meetings and lectures from 1933 on, some of which were essentially seed essays for later projects and books that would come to define the comparative study of religion, and especially the comparative study of mystical literature, in the twentieth century. Luminaries included Carl Jung, Mircea Eliade, Gershom Scholem, Henry Corbin, and Joseph Campbell.25