Tucked into the mountains of Iranian Azerbaijan, the Armenian Monastic Ensembles of Iran preserve three living churches — St Thaddeus, Saint Stepanos, and the relocated Chapel of Dzordzor — each shaped by earthquakes, invasions, and centuries of Armenian-Persian coexistence. This UNESCO-listed trio remains far off the usual itinerary, rewarding travelers willing to make the drive with a rare, still-active piece of Christian heritage.