The history of Vallen estate dates from the 14th century. In the 15th century it was owned by brothers Åke and Povel Laxmand. The original castle was destroyed and rebuilt several times in the wars between Denmark and Sweden. In 1800 the castle was destroyed by fire. The current main building was built next year by Otto Wilhelm Burenskiöld. Today Vallen is a horse riding and conference center.
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.