cladding appears to be missing. Other bands of stone-carved decoration were only partially executed. For example, at the foot of the decorative niche on the left side of the portal one arabesque medallion was carved on the left while the one on the right was not. (This is also a rare demonstration of the steps in the stone-carving process: it is likely that a master craftsman drew the outlines of the pattern into the stone and that apprentices were later responsible for carving it out; in this case, the second step was not completed.) Some of the carved patterns, even if unfinished, are themselves notable; for example, there are floral chinoiserie motifs here which appear in other Mamluk crafts of the time but do not appear anywhere else in Mamluk architecture. Another minor but curious feature is the sculpted image of other architectural buildings in some of the carvings just above the stairs leading up to the portal; these are possibly spoils from a Gothic-style Christian monument, presumably from Crusader churches located on the estates donated to the madrasa-mosque's foundation. The original bronze-covered doors of the entrance were forcibly purchased at a modest price by Sultan Mu'ayyad in the early 15th century for use on his own mosque, and can still be seen there today. Interior Although the exterior walls of the building are in stone, much of the interior is brick, with facades covered in stucco and finished with stonework for decorative details. The entrance vestibule The vestibule chamber upon entering the mosque is an unusually ornate space, covered by a small central dome surrounded by elaborate muqarnas vaults. The dome and half-dome arrangement here is reminiscent of Byzantine architecture, but may have been inspired from Armenian craftsmanship, if not original. The back wall facing the doorway is covered in marble paneling: in the middle is a square panel made of inlaid white and red marble in a geometric pattern of Syrian style, while on either side are marble panels with other carved patterns. From this chamber, a bending passage leads to the central courtyard. Also located behind the walls of the vestibule on the floor plan is a space which may have once housed, or was intended to house, a doctor and medical students, as mentioned in the foundation (waqf) document. The space is now ruined, or might have never been finished. The central courtyard and mosque area