Nejdek Castle history is unclear. According to hypotheses, the castle was built from the end of the 13th century to the beginning of the 14th century. According to the feudal letter of 1341, the first documented castle owner was the knight Konrad Plick. At the beginning of the Thirty Years War the castle was probably still there and inhabited. In the course of the Counter-Reformation, rule came to Count Hermann Czernin in 1633. His nephew, Count Humprecht Johann Czernin, probably caused the old walls to be demolished due to disrepair and to use the building material to build the new castle in Neudek.
Today the tower and some fragments of original castle remains.
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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.