Troulean temple, belonging to the eastern tetrastyle type of the inscribed cruciform. Oblong in shape, it is housed with a system of domes dominated by the tall and wide arches of the cross along its length and width. The support of the domes on four pillars contributed to the unity of the interior of the temple and the subdivision of the spaces. The harmony of volumes and proportions and the richness of the ceramic decorations create a beautiful image, which has no equal in the region of Kastoria. Inside the monument there are frescoes in two layers. Recently, the old layer has been revealed in several places, so that the date of construction of the monument, around the middle of the 12th century, can be estimated more precisely.
Also of great artistic value is the wood carving of St. George that survives on the south wall of the church, a very rare work for Byzantine art.
According to tradition, it is said that the approximately three-metre xoanon (idol), a work of the 13th century, was brought from Ioannina by two nuns on sledges, while many visitors, worshipping the relief icon, press a coin with their finger on the body of the saint, making a wish, which, according to tradition, is granted if the coin sticks to the body of the saint.