San Giorgio in Braida church was built in the 16th century in the medieval quarter of Veronetta. The 12th-century bell tower is what remains of a monastery built in the 11th century. The facade is marble white with two rows of pillars. The statues of St. George and St. Lorenzo Giustiniani are on sides. The interior has a single nave built between 1536 and 1543, and contains key works of art. Above the main door is a Tintoretto painting depicting the baptism of Christ. The church houses Paolo Veronese's masterpiece, The Martyrdom of St. George. In 1540 Michele Sanmicheli built the dome of the church. In 1776 were cast the six bells tuned in the scale of G major, on which was developed the Veronese bellringing art.
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.