Knutstorp estate was first mentioned in the mid-1300s. It was owned by the powerful Danish family Brahe until 1633. In 1771 Knutstorp was sold to Fredrik Wachtmeister and it has been since owned by his family.
The main building dates from the mid-1500s. It was built by Otte Brahe and is the birthplace of the famous astronomer Tycho Brahe (born 14 December 1546). After the occupation of Sweden King Carl XI ordered to strenghten Knutstorp as a stronghold. Danish army conquered it in the same year and the main building was damaged by fire. It was restored in 1728 and again in 1840s. Two wings were destroyed by fire in 1956.
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.