Liebenburg Castle with its tower and the remains of its wall on Schlossberg near Eisweiler is the landmark of the municipality of Namborn. It was built at the end of the 12th century by Bliesgaugrafen von Castel by order of the diocese of Verdun. The castle was first mentioned in documents in 1220, when the Bishop of Verdun appointed the knight 'Boemund de Lievenberc' as castle guard. The castle came into the possession of the archbishops of Trier in around 1400, who pledged the castle to solvent noble families due to a lack of money. From 1677 to 1696, the castle was pledged in ownership to the lords of Sötern. It was during this period that the castle was finally destroyed.
From the castle tower, you have a wide view of the surrounding area of Sankt Wendel County.
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.