The history of Kyminkartano estate starts around 1350, when Earl Erengisle Suneson acquired some farms around the branches of Kymijoki river. He donated the estate in 1370 to Seneschal Bo Jonsson Grip, who was one of the most powerful noblemen of the kingdom. Late Grip donated Kyminkartano to Vadstena Abbey.
King Gustav Vasa visited in Kyminkartano in 1555 and acquired it to the Crown. After Russia had conquered the area in the 18th century, the government redeemed most of the estate's property. The new main building was built in the 1790s and owned by Wrangel, Clayhills, Bruun and Naht families. Today Kyminkartano is privately owned and not 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.