Polychron Monastery

{{Short description|Monastery in Turkey}}

Polychron Monastery was a medieval Byzantine monastery in Bithynia founded in the 5th century.{{Cite book |last=Betti |first=Maddalena |url=https://books.google.com/books?id=MdLYAQAAQBAJ&q=%22Polychron%22%27&pg=PA250 |title=The Making of Christian Moravia (858-882): Papal Power and Political Reality |date=2013-10-24 |publisher=BRILL |isbn=978-90-04-26008-5 |language=en}} It is located on the slope of the Asia Minor Olympus (today's Uludağ, near Bursa, Turkey).{{Cite book |last=Vlasto |first=A. P. |url=https://books.google.com/books?id=fpVOAAAAIAAJ&dq=%22Polychron%22+monastery&pg=PA36 |title=The Entry of the Slavs Into Christendom: An Introduction to the Medieval History of the Slavs |date=1970-10-02 |publisher=CUP Archive |isbn=978-0-521-07459-9 |language=en}}

In 851, Saint Methodius of Thessaloniki came to the monastery, later becoming its head.{{Cite book |last=Hussey |first=J. M. |url=https://books.google.com/books?id=J-H9BTVHKRMC&dq=%22Polychron%22+monastery&pg=PA414 |title=The Orthodox Church in the Byzantine Empire |date=2010-03-25 |publisher=OUP Oxford |isbn=978-0-19-161488-0 |language=en}}{{Cite book |last=Casiday |first=Augustine |url=https://books.google.com/books?id=bkZITAQ4XbgC&dq=%22Polychron%22+monastery&pg=PA264 |title=The Orthodox Christian World |date=2012 |publisher=Routledge |isbn=978-0-415-45516-9 |language=en}} After his mission to the Saracens, the same year Saint Constantine-Cyril the Philosopher also settled in the monastery. In this monastery in 855, on the basis of the developed Byzantine minuscule writing system, Cyril and Methodius created the first Slavic alphabet – the Glagolitic script.{{Cite web |title=Честваме Деня на българската просвета и култура |url=https://www.banker.bg/obshtestvo-i-politika/read/chestvame-denia-na-bulgarskata-prosveta-i-kultura |access-date=2022-09-08 |website=www.banker.bg|date=24 May 2017 }}