Cadolzburg Castle to be seen nowadays is from the 13th to 18th century and was used as one of the residences of the Hohenzollern dynasty as burgraves of Nuremberg. Frederick I. of Brandenburg rebuilt it entirely, and later died there in 1440. For the church dedicated to St. Cecilia he donated the altar (1420/25), on which he is depicted together with his wife Elisabeth of Bavaria-Landshut in the middle part, right under the crucifixion scene. The side parts show St. Cecilia together with their groom, St. Valerian. The altar was gifted to Frederick III. on his request and moved to Berlin. The original is today in the Jagdschloss Grunewald, but the church displays a copy. The Castle was not damaged during the Thirty Years' War.
1933–1945 a part of the castle, the so-called Neues Schloss (New Palace) was used as a Gebietsführerschule by the Hitler Youth. At the end of the war the castle burned down and was left a ruin for various decades. Since 1979 the Bavarian Administration of State-Owned Palaces, Gardens and Lakes together with the Bauamt Nuremberg-Erlangen is responsible for the reconstruction and maintenance of the castle. The reconstruction started in 1982 with the Castle itself and was finished in 2007 with the new creation of the gardens. For seven years the inner and outer parts of the castle were open to the public and events were held.
In 2013, it was decided to transform the Altes Schloss (Old Palace) into an experiential museum. In 2017 it was opened under the name 'HerrschaftsZeiten. Erlebnis Cadolzburg'.
South to the Main Castle exists an Antecastle (Vorburg) consisting of multiple buildings from the 17th and 18th century and a walled garden. The Wall Tower with the included clock is a gothic element from the 13th/14th century.
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.