Traditionally, Mirozhsky Monastery was founded in the twelfth century, but it may have been established as early as the early 1010s based on a manuscript bearing a thanksgiving list inscription mentioning Prince Svyatopolk of Kiev who was excommunicated from the Church in 1015 for the murder of his brothers, [[Boris and Gleb]]. The monastery soon became one of the richest monasteries in Pskov as well as a significant cultural center. It is located on the left bank of the Velikaya River where it meets the smaller Mirozhka River. The oldest building of the monastery is the [[Transfiguration Cathedral (Pskov)|Cathedral of the Transfiguration of Our Lord]] commissioned in the late 1130s by [[Archbishop]] Nifont of [[Novgorod]] when he was in exile from Novgorod. The [[cathedral]] is in the typical cross form of Greek churches. The frescos of the Transfiguration Cathedral were painted by artists from Constantinople in mid-twelfth century. Some eighty percent of these frescos have survived the ravages of flooding by the adjacent Velikaya River. Currently, the cathedral is part of the Pskov State Museum-Reserve of History, Architecture, and Art. The cathedral and its frescos are included on the UNESCO list of outstanding architectural landmarks of the world. A second church, the Church St Stephan the Archdeacon, was added to the monastery complex in the seventeenth century.