Holstenshuus estate was first time mentioned in 1314. It is known as Holstenshuus since 1723, whe the estate was acquired by Christian Adolph Holsten. The oldest wing of the current castle was built in 1579 by Knud Venstermand. Two other wings date from 1643. The major restoration was made in 1863-1868 and again in 1910 after a great fire. The surrounding Rococo park (established in 1753) 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.