In around 1300 Sostrup was an outlying farm known as Svorttorp but the first written record dates from 1388. The current castle was built in 1586 by councillor Jacob Seefeld. In 1807 the castle was bought by the Danish State and in 1829 by Jakob von Benzon. After this period some changes and restorations were made until the Danish State went into possession again in 1945. In 1946 it was run as a refugee camp. In 1960 the castle was bought by the Danish Cistercian Order. The castle was totally restored and today it is run as a conference centre.
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.