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 ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.