jan 1, 318 - First Christian Monastery
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Around 318 Saint Pachomius started to organize his many followers in what was to become the first Christian cenobitic or communal monastery. Soon, similar institutions were established throughout the Egyptian desert as well as the rest of the eastern half of the Roman Empire.
- https://en.wikipedia.org/wiki/Monasticism
The first Christian monks, who had developed an enthusiasm for asceticism, appeared in Egypt and Syria. Notably including St. Anthony, the founder of Christian monasticism, they appeared as solitary figures who, out of a desire for further and more advanced isolation, established themselves in tombs, in abandoned or half-deteriorated human settlements, in caves, and, finally, in the wilderness of the desert to do battle against the desires of the flesh and the wiles of the devil. Soon there were great numbers of desert anchorites, living solitary lives of devotion to God and coming together for weekly prayer services. The pious lifestyle of these earliest holy men attracted numerous imitators and admirers.
https://www.britannica.com/topic/Christianity/Monasticism
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