Palais Schaumburg served as the primary official seat of the German Federal Chancellery and the primary official residence of the Chancellor of the Federal Republic of Germany from 1949 until 1999.
The late neoclassical palais was built between 1858 and 1860 for the cloth manufacturer Wilhelm Loeschigk. Bought by Prince Adolf of Schaumburg-Lippe, it was enlarged during the following years. In 1939 the German army bought the palace. After World War II, the Belgian Army staff used the building until it became the official seat of the first chancellor of the Federal Republic, Konrad Adenauer, in November 1949.
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.