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:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.