The Ploegsteert Memorial to the Missing is a Commonwealth War Graves Commission (CWGC) memorial in Belgium for missing soldiers of World War I. It commemorates men from the Allied Powers who fought on the northern Western Front outside the Ypres Salient and whose graves are unknown.
After Ploegsteert Wood had been the site of fierce fighting at the start of the war, it became a relatively quiet sector where no major action took place. Allied units were sent here to recuperate and retrain after fighting elsewhere and before returning to active operations. Berks Cemetery Extension was founded by Commonwealth troops in June 1916 as an extension to Hyde Park Corner (Royal Berks) Cemetery which lies across the road. The cemetery grounds were assigned to the United Kingdom in perpetuity by King Albert I of Belgium in recognition of the sacrifices made by the British Empire in the defence and liberation of Belgium during the war.
The Ploegsteert Memorial was designed by H. Chalton Bradshaw. The Ploegsteert Memorial is 21 m in diameter and 11.73 m tall and was unveiled on 7 June 1931 by the then-Duke of Brabant, later King Leopold III of Belgium.
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.