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:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.