Atros Monastery in Kefalonia island is the oldest monastery, according to the old testaments it dates back to 1264. In recent centuries the Monastery of Atros was primarily a monastery for monks, except from 1500s to 1600s, when it operated as a nunnery.

- Known as: Atros Monastery, Moni Iperagias Theotokou Atrou, Ιερά Μονή Υπεραγίας Θεοτόκου Άτρου
- Location: Kefalonia southeast
- Address: Cephalonia Poros 280 86, Greece
- Coordinates and map: 38.159512, 20.751184
- Access: 4,5 km dirt road (varied conditions)
- Facilities: –
- Entry fee: –
- Opening hours: usually closed
- Villages nearby: Poros
Where to stay:
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