It features extensive Romanesque designs, including pilaster buttresses and arcading. Neoclassical decorations included columns, pilaster, caryatids, Atlases and friezes adopted from Greek and Roman architecture. Typically these were four sided designs with the corners reinforced by pilaster buttresses. It had a square plan, and measures externally with pilaster buttresses at each corner. The wall surfaces have pilaster pairs supporting chaitya-style arches. Other ruins found at the site included pilaster and pillar parts. The granite base is capped with a dome built of brick and pilaster. A slightly larger light grey granite base flared out above the pilaster section. The carvings on the pilaster include those of animals and flowers. The classical orders are in pilaster form except around the central doorways. On the right pilaster is a double crescent ornament. At the top of each pilaster is a mosaic tile. Its extensive pilaster work and mosaic flooring are noteworthy. During the Renaissance and Baroque architects used a range of pilaster forms. Their eldest son Alexius Comnenus is represented on an adjacent pilaster.