The imposing Church of Agios Georgios in Kalamas, dating from around the middle of the 12th century, is of double interest both for its architectural form and for the minimal remains of its original mural decoration. It belongs to the architectural type of the cruciform inscribed domed four-column temple with a narthex. The external narthex does not belong to the original form of the building, but is a later addition. Later is the tomb on the south side in the arcosol type as well as the single-handled spire that rises in the SW corner of the outer narthex. The frescoes are preserved in fragments in the narthex and the eastern cross vaults and include the best-preserved breastplates of Saints Auxentios, Mardarios and Orestes. The most important frescoes depict the martyrdom of Saint George. The scenes are arranged in a decorative zone that runs the entire width of the west wall of the narthex. This zone is divided into two sections, in which the three representations are arranged, Xesis, the Saint before the emperor Diocletian and the Plaka in the east, as well as the wheel and Asbestos in the west. The quality and style of the painted decoration is reminiscent of workshops in Istanbul.