*ca.990 Bp. [[w:Œcumenius|Œcumenius of Trikka]] (now Trikkala) in Thessaly writes several commentaries on books of the [[New Testament]].

*ca.992 Greek monk and wonderworker St. [[w:Sergius of Valaam|Sergius of Valaam]] co-founded the [[Valaam Monastery]] (along with [[w:Herman of Valaam|Herman of Valaam]]), in [[w:Republic of Karelia|Russian Karelia]] on Valaam island, and is credited with bringing Orthodox Christianity to the Karelian and Finnish people.

*ca.999 Icon of the [[Panagia Portaitissa]] appears on Mount Athos near Iviron monastery.

*10th c. [[w:Paris Psalter|Paris Psalter]] produced, a Byzantine illuminated manuscript containing 449 folios and 14 full-page miniatures "in a grand, almost classical style", considered a key monument of the so-called [[w:Macedonian Renaissance|Macedonian Renaissance]] in Byzantine art.