Kosin\u00eb is a historical community near Premeti, in the upper part of the valley of the Aoos River, a short distance from one of the most important national parks of the country, the \u201cBredhi i Hotoves-Dangelli.\u201d The village is about thirty-five kilometers from the border crossing of Mertzani, at the end of the plain of Konitsa and at the same distance from the Holy Monastery of Panagia Molyvdoskepastos. In the wider area, there is a confirmed presence of organized settlements from the ancient times, such as Vyllida, Apollonia and Amantia, ancient cities that can be found in the lower part of the Aoos River, descending towards its mouth in the Adriatic.
\nAt the southwestern end of the village of Kosin\u00eb, in a prominent position, the Church of the Assumption of the Virgin Mary is located in a fenced, with a low stone wall, hillock. Among the buildings of the monastic complex, only the katholikon survives today, which, with its excellent architecture, gives us a small sample of the great ensemble that existed before. On the basis of historical sources and oral testimonies, we are told that the church played an important role in the spiritual and social life of the wider region. Specifically, for the period following the late Byzantine period, we are informed that in the northwestern corner of the complex from the 19th century onwards there was a Greek school, which operated until the mid-1930s.
\nThe Church of the Assumption is a building of the 12th-13th century, a remnant of a monastic complex, which, as mentioned before, is no longer preserved. It is a cruciform church with a dome, with brick masonry and ceramic decorations, a red multi-level roof and ornate carved decorations on the upper parts of the wall and the dome drum. From an architectural point of view, it presents similarities with the church of the Nativity of the Virgin of Upper Episkopi, in the area of Dropull, but with richer external decoration.
\nOne can access the church through a door on the west side, while two side doors are also present on the sides of the transept, north and south respectively, which are used only for ventilation of the interior. The narthex is developed on the west side. This part of the temple, on the outside, appears as a first transept, parallel to that of the nave. This section is covered by a semi-cylindrical arch, rather than the usual gable roof, an element not often found in similar buildings of the same period and which gives this relatively small building an extremely interesting character.<\/p>\n