The article presents the first attempt at a comprehensive interpretation of the architectural development of the Jurklošter Carthusian monastery's great cloister and its appearance before and after the reconstruction that was financially supported by the Counts of Cilli Frederick II and Ulrich II. The article also refers to several archival sources that have been overlooked to date. These reveal the previously unknown patrocinium of the cemetery chapel in the cloister's atrium as well as, quite reliably, the location of Veronika of Desnice's grave. They also bring new information about the granting of indulgences, permission to erect an altar in the cemetery chapel, and consecrations. Apart from discovering new archival sources and carrying out a comparative analysis with the relevant medieval Carthusian monasteries elsewhere in Europe, the article is methodologically based on the art-historical analysis of two archaeological georadar recordings, of which one has been published for the first time in this very contribution.