Antrim Castle was erected in stages between 1613 and 1662. It was destroyed by fire in 1922 and finally demolished in the 1970s. All that remain are a slightly raised grassed platform as well as a freestanding Italian stair tower which was built in 1887 and a gatehouse, which was built around 1818 with twin neo-Tudor towers, with older connecting walls.
The gardens, originally dating from the 17th-century, are a popular tourist attraction. Jacobean-Revival outbuildings of coursed rubble basalt with sandstone dressings were built about 1840. The entrance gateway to the demesne has octagonal turrets. The stable block was later converted for use as a family residence and renamed Clotworthy House. This was acquired by Antrim Borough Council and converted for use as an Arts Centre in 1992.
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.