Mar Mattai monastery
Mosul, Iraq
Dayro d-Mor Mattai (Syriac, The Monastery of St. Matthew or Dayro d-Mor Mattai) is a Syriac Orthodox Church monastery on Mount Alfaf in northern Iraq. Located 20 kilometers northeast of the city of Mosul, it is recognized as one of the oldest Christian monasteries in existence and the oldest Syriac Orthodox monastery in the world. The monastery was famous for the number of monks and scholars it housed, and for its large library and considerable collection of Syriac Christian manuscripts. Today, it is an archbishopric; the current archbishop is Mor Timothius Mousa Alshamany.
Monastery data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).