For the wider area of Kastoria, the existence of older Byzantine and post-Byzantine monasteries is known, which, however, have been destroyed for various reasons over the years. Specifically, on the eastern side of the lake of Kastoria, south of Mavrochori (Mavrovo), the post-Byzantine church of Agios Nikolaos is preserved. It is a church of the 16th century, which must have been the katholikon of a monastery.
In the nearby area there were even estates of Panagia Mavriotissa, which may indicate some connection with the monastery here. Wonderful 18th century iconographies adorn the outer wall of the narthex and among them is the extraordinary depiction of the slaughter of the infants.