Schloss Baldern was first mentioned in historical documents in the 11th century. In the mid-12th century, it was owned by a noble family known as the Edelfreien von Baldern. In 1280, the castle came into the possession of Count Ludwig V. von Oettingen. In the 15th century, it was pledged by his descendants and later redeemed in 1507. The current baroque appearance as the residence of the Counts of Oettingen-Baldern was established between 1718 and 1737. The construction was overseen by Franz de Gabrieli, and after his death, by his brother Gabriel de Gabrieli.
After the extinction of the noble family Oettingen-Baldern in 1798, the estate passed to the House of Oettingen-Wallerstein. Major renovations took place in the 19th century, including the landscaping of the hilltop into a landscaped garden. The tower was erected in 1887 under the direction of August von Beyer. As early as 1896, Schloss Baldern was opened to the public.
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.