The original Purila Manor was first mentioned in 1513. It was built in Purila, Rapla County and was rebuilt in 1810 and again in 1930s. It was used by Estonian aristocrary, including Friedrich Gustav von Helffreichi, until the 20th century when it was used for education. After World War II it was used by the Soviet Army, including the 8th Estonian Rifle Corps from 1953 to 1957.
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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.