The first written mention of the castle in Olomouc is included in the Cosmas Chronicle in 1055. The king Wenceslas III, the last Přemyslid, also stayed at the castle and was assassinated here in 1306. In 1767 the young Mozart stayed in the house of the Chapter Provost on the castle grounds and composed Symphony No. 6 in F major here. Some of the recent celebrities who have visited the site are Mother Theresa or Pope John Paul II.
After being partially damaged during the Thirty Years’ War, the medieval castle grounds were reconstructed in the Baroque style over a period of almost one century. Today, there remains little visible evidence of the significance and power of this castle. As time went on, the castle was overbuilt with religious buildings and the Wenceslas cathedral.
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.