The Archbishop's Palace is a castle and palace in the city of Trondheim, located just south of the Nidaros Cathedral. For hundreds of years, the castle was the seat, residence and administrative center of the Archbishop of Nidaros.
The castle is one of the largest medieval stone structures in Scandinavia and the oldest walls are likely from the 13th century. The Archbishops of Nidaros expanded the castle gradually, with great halls and residential areas being built over time. Norway’s last Archbishop, Olav Engelbrektsson, attempted to make a final stand and defend the castle during the Reformation but eventually fled into exile.
After the abolishment of Roman Catholicism, the castle became royal property where the local lensherre resided. The castle was restored, rebuilt into a residential palace and eventually used more for military purposes, again being expanded considerably. After the Sovereignty Act of 1660, the castle became the seat and residence of the Amtmann.
Today, the castle has several museums, is frequently used by the Church of Norway and is also the venue of Olavsfestdagene. The Regalia of Norway have been kept in the western flank of the castle at various times since 1826, but have been on permanent display in the castle since 2006.
'The Armoury' (Rustkammeret) is a Norwegian army museum as well as a resistance museum, emphasizing the military history of Trøndelag. Military equipment of Norway during World War II at display in the 'Armoury' Army Museum in Trondheim. The museum has weapons, uniforms and other artifacts on display, starting with the Viking Age, going through the Middle Ages and the Norwegian union with Denmark (1380–1814) and later with Sweden (1814–1905), up to the German occupation of Norway during World War II (1940–1945).
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.