The 11th century wooden stronghold of Racibórz was rebuilt as a brick castle in the third quarter of the 13th century. Around 1290 a chapel was built in the castle with the significant dedication of Saint Thomas of Canterbury.
At present, its most valuable element is the castle chapel, due to its high artistic level called the pearl of Silesian gothic. Fortunately, the reconstructions from the seventeenth and nineteenth centuries did not manage to change its Gothic interior, and the 19th-century matroneum placed on the site of the medieval one, neatly imitates the likely appearance of the original. The gables, western entrance portal and vault in the western bay of the chapel have also been transformed. Next to it is the palace wing. Recently renovated it is a place of cultural and entertainment events and a small museum.
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.