Shane's Castle is a ruined castle near Randalstown in County Antrim, Northern Ireland. The castle is on the north-east shores of Lough Neagh. Built in 1345 by a member of the O'Neill dynasty, it was originally called Eden-duff-carrick. Shane MacBrien O'Neill changed the name to Shane's Castle in 1722.
Multiple scenes of Game of Thrones series have been shot in and around the 2600-acre estate; it’s hosted the Tourney of the Hand in honor of Ned Stark, was seen to good effect when King Robert Baratheon and posse arrived at Winterfell, and served as the King’s Landing dungeons.
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.