Oporów Castle is built of bricks in the Gothic architectural style in between 1434–1449 in the village of Oporów The castle was raised by the Deputy Chancellor of Poland (1429-1434), and highly regarded religious leader Władysław Oporowski.
The first wooden stronghold located in Oporów was recorded in the fourteenth century. The castle is said to have been raised by Mikołaj Oporowski and his son Władysław Oporowski, a highly regarded political and religious leader in the Kingdom of Poland, which in 1428 took on the estate as his own. Up until the eighteenth century the castle was owned by several families: House of Sołołobów, Korzeniowski, Pociejów and the House Oborski. The residence had only once ever been hit by any sort of devastation - in 1657 the castle's top levels caught fire - however, all of the castle was reconstructed. In 1930 the castle was transferred to the Society of the Credit of Land in Warsaw (Polish: Towarzystwo Kredytowe Ziemskie w Warszawie). After World War II the castle was nationalised and reconstructed. In 1949 the castle began housing a 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.