Deyrulzafaran Monastery is a multi-layered religious and architectural complex located to the southeast of Mardin, distinguished by its uninterrupted sacred use from antiquity to the present. Pre-Christian, late antique, and medieval architectural strata are organized within a vertically articulated spatial continuity, most prominently structured around a subterranean space commonly identified as a former sun temple beneath the main architectural mass. Subsequent Christian building phases were constructed directly above this underground layer, establishing a sequential and integrated relationship between subsurface, ground, and upper levels. From the 5th century CE onward, the monastery became a central institution within the Syriac Orthodox tradition, accommodating religious, educational, and administrative functions over centuries. Composed of churches, chapels, courtyards, monastic cells, cisterns, and auxiliary spaces, the complex is characterized by controlled use of light, material continuity, and a circulation system defined through thresholds and gradual transitions, allowing Deyrulzafaran to be read as a long-term sacred landscape shaped by architectural endurance and the spatial coexistence of successive belief systems.