Corgarff Castle is located at Corgarff, in Aberdeenshire. The castle was built in the mid-16th century by the Forbes of Towie. In 1571 it was burned by their enemy, Adam Gordon of Auchindoun, resulting in the deaths of Lady Forbes, her children, and numerous others, and giving rise to the ballad Edom o Gordon. After the Jacobite risings of the 18th century, it was rebuilt as a barracks and a detachment of government troops were stationed there, on the military road from Braemar Castleto Fort George, Inverness.
Military use continued as late as 1831, after which the tower served as a distillery and housed local workers. It remained part of the Delnadamph estate belonging to the Stockdale family until they passed the castle into state care in 1961 and gave the ownership of the castle to the Lonach Highland and Friendly Society. It is now in the care of Historic Scotland and is open to the public.
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.