Ekebyholm is a castle-like mansion and a former manor located by Lake Syningen in Rimbo parish in Norrtälje Municipality in Stockholm county, Sweden. In 1932, the Adventist school purchased Ekebyholm. Presently Ekebyholmsskolan is located on site.
Ekebyholm in Rimbo (currently a part of Norrtälje) was attached with the estate of Mörby, owned by the Pomeranian-originated family of Slaveka. Bengt Gabrielson (Oxenstierna) af Mörby (d. 1591) acquired the estates of Mörby and Ekebyholm which were separated with Mörby passing to his elder son Gabriel Bengtsson Oxenstierna (1586-1656) and Ekebyholm passing to the youngest, posthumous son Bengt Bengtson Oxenstierna (1591-1643) who first had the manor built at Ekebyholm.
The current appearance was built by Arvid Horn during the 18th century.
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.