Schloss Montabaur was the seat of the district administrator's office of the old Unterwesterwaldkreis until 1945 before becoming the seat of the Montabaur district government.
The curent appearance dates from the restoration made in 1687–1709. Today, it is owned by the Akademie Deutscher Genossenschaften, which has expanded it for use as a 4-star conference hotel and training centre for the Raiffeisenbank and credit unions. It stands in a prominent position above the town on the Schlossberg hill.
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.