The lack of a foundation leads to an abrupt shift from the tiling to the floor. Wedged between the mihrab frame and niche is cambered tiling featuring a bright shade of red which stands out because that shade of red is not found elsewhere and contrasts with the dark red used as an accent on many other qibla tiles. This cambered section also is much more ornate than the relatively plain two-blue tiling on either side. The mihrab frame tiles are quite different as they feature embellished white tiles and include blue guard stripe borders. While these borders feature the two-blue painting style, they are less dry than the two-blue tiling found elsewhere on the qibla wall. The border stripes frame both the mihrab and the calligraphy (in the thuluth script) panel above the frame tiles. The result is a unique structure in Istanbul and among Sinan's other works. Gallery See also List of Friday mosques designed by Mimar Sinan References Sources . Further reading External links 160 photographs in gallery, PBase 360 degree panoramic view of the mosque interior, 3dmekanlar. Religious buildings and structures completed in 1563 Mimar Sinan buildings Ottoman mosques in Istanbul Fatih 16th-century mosques