entered via the main portal dating to the 6th century, which consists of an arched entrance flanked by two towers, leading to a small atrium where one may see inscriptions related to the Chu

rch. This atrium, which measures 34x47 m. is on the western front, and consists of a central court surrounded by an arched portico with a balustraded gallery to the exterior. A number of amphora dating from various periods are to be seen in the centre of the court. A three celled cistern is buried below the western portal, and covered with a vault. This is buttressed with flanking walls to compensate for the curve of the site.
Layout: Between the atrium and the nave of the church is a long narrow narthex. Massive lentils of dressed marble frame the three doors leading to the atrium and into the nave from the narthex. A wall and a number of portals were added between the atrium and the narthex at a later date, to create an exonarthex. Five cupola surmount the narthex itself. The main church is cruciform in plan, a classic plan with three naves, and a superstructure of six, large domes over the main nave, with vaulted flanking naves. The domes were originally supported by marble and brickbond piers, still partially in situ, with a row of blue-veined marble columns lining the Church between the naves. The monograms of Theodora, wife of Justinian, are engraved on these columns, which enables us to date the structure. The above mentioned rows of Columns are joined by a series of arches which in turn support a second row of arches at gallery level. The mausoleum chamber is situated before the apse in the central nave, and is marked out by being raised from the rest of the nave, with two steps between.