 The most ancient part of the existing church is the square building which surrounds the altar.Although often referred to as a 'Greek Cross' church, this building does not really fall into this category, as it has no projecting 'arms' or transepts, only a single apse on three sides, and a triple apse to the 'east' (the church is not aligned to the compass points).The triple apse would not appear to have been mirrored to the 'west' where the entrance was and is to be found, subsequent alteration has made it impossible to determine whether there was originally a narthex.