The Church of the Holy Apostles is a magnificent, marvelously proportioned example of Byzantine architecture, was built around the year 1000, in the heart of the Agora. Once inside, you’ll get a better idea of its centrally planned structure, typical of Eastern churches, which renders all four sides symmetrical. The altar is thus placed at the center, symbolizing the idea that salvation is never far away. Byzantine churches are therefore built upwards rather than outwards.