Świny Castle, formerly a gord, as a stronghold existed in its location already in the 5th century - securing the Lubawecki mountain pass, the site was recorded in Cosmas' documents from 1108, where the gord is recorded as Suini in Poloniae. Possibly, soon after, the gord had been expanded into a military stronghold, at which time it was the seat of the castellans. The castle was mentioned in Pope Adrian IV's Papal bull. After the Bolków Castle was constructed, the castle began to lose its significance, this continued up to the nineteenth century, when the castle suffered severe damage due to hurricanes (1762, 1840, 1848, and 1868). The castle suffered further devastation - it was not until 1931 when the authorities had engaged in securing the castle's ruins. Currently the castle is privately owned.
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.