This mosque in Istanbul, now a museum (Kariye Müzesi), was once called the St. Savior in Chora Church and was built in the 11th century.  It had several stages of building, but during the present state of our visit, the building dated from the 14th century.  It is very typical of late Byzantine churches.  The drums are perforated and raised and the brickwork on the exterior is very fine.

The barrel vaults of the interior had a scalloped pattern, which were destroyed.  The vault was a corrugated roof originally.  There are fine frescoes and mosaics with their quality found in bodily effects (that happened in Italy at the same time).  The iconography consisted of the mosaic of Christ and the mosaic of the Virgin Mary; for the importance of dedication was to both.  We saw the mosaic of Metochites, who was the caretaker, in the narthex above the entrance to the nave.  The mosaics here were reminiscent of the one in 6th century Hagia Sophia.

There is the genealogy of Christ, scenes of the Virgin Mary and many more from top to bottom of the pendentives as we entered the church proper with central dome.  From the exterior to the interior, the order of the mosaics were depicted.  Finally in the paracclesion, a funerary chapel to the side that was added later, we found Christ relieving Adam and in Eve in Hell, the Anastasis of Hell.  We were told to pay attention to the light here.

Afterwards, we visited the Theodosian Wall.