Built in the 12th century, Santa María Magdalena is a small Romanesque church of the Templars. At their suppression, it was given to the Venerable Order of Saint John. The exterior features a deeply recessed south entrance, with circular arches and shafts, as well as ornate Romnnesque work. The rose window, formed with small columns, is similar to the Temple Church in London.
The interior includes canopied tombs dating to the 13th century, supported by spiral and fluted shafts. Against the north wall, there is a tomb under a canopy supported by three shafts. The sepulchre itself is plain, carved with a cross; the effigy of its occupant is carved, as if lying on a bed, out of a bold block of stone, and inserted in the wall; above this is the soul (in the shape of a head with wings) supported by angels.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.