It would appear that the Pantokrator was abandoned by its Christian owners very soon after the conquest. The great decrease of the Greek population that followed the downfall of the city left several quarters of Constantinople with few if any Christian inhabitants, and so brought to an end the native religious service in many churches of the capital. For some time thereafter the deserted building was used by fullers and workers in leather as a workshop and dwelling.[401] But the edifice was too grand to be allowed to suffer permanent degradation, and some twenty years later it was consecrated to Moslem worship by a certain Zeïrek Mehemed Effendi.[402] Its actual name, Zeïrek Kilissi Jamissi, recalls the double service the building has rendered, and the person who diverted it from its earlier to its later use. _Architectural Features_ As it stands the Pantokrator is a combination of three churches, placed side by side, and communicating with one another through arched openings in their common walls. The three buildings are not of the same date, and opinions differ in regard to their relative age. On the whole, however, the northern church may be safely considered the earliest structure; the central church is somewhat later; the southern church is the latest. [Illustration: FIG. 76.] [Illustration: PLATE LXVI. S. SAVIOUR PANTOKRATOR. SOUTH BAY IN THE GALLERY OF THE SOUTH CHURCH.] [Illustration: S. SAVIOUR PANTOKRATOR. IN THE NORTH CHURCH, LOOKING SOUTH. _To face page 234._]