The Räpina (a.k.a Sillapää) manor, established in 1582, has belonged to the Oxenstjerns, the von Wrangells, the von Löwenwoldes, the von Richters and the von Sivers. The Classicist main building, established in the 1830s, is still there but has been rebuilt a little bit in the 20th century. Today, the museum is located on the manor grounds. The mill, established in the first half or in the middle of the 18th century, is also still there, also a historical paper mill.
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.