Terpersie Castle is a 16th-century tower house in Tullynessle. The small Z-plan tower house was constructed in 1561 by the Gordon family. In 1665 it was restored after burning down. After 1885 it was abandoned, and stood in ruins during most of the 20th century. In the 1980s the castle was restored as a residence by architects William Cowie Partnership.
Terpersie is one of the earliest known Z-plan castles, defined as a rectangular main block with towers at opposite corners.
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.