Think Bulgarian city Plovdiv, Think Armenian church 1828 this amazing door key has been in use since the creation of the church, Plovdiv is the most ancient living town in Europe; it is more ancient than Rome, Athens, and Constantinople and is a temporary town of the ancient Troy. during the rule of the Byzantine emperor John Tsimiskhi 976 he helped many Armenian people to settle in the region around Plovdiv. more to come… from Bulgaria..