The Neuengamme concentration camp was established in 1938 by the SS organisation. It was operated by the Nazis from 1938 to 1945. Over that period an estimated 106,000 prisoners were held at Neuegamme and at its subcamps. The camp served the needs of the German war machine and also carried out exterminations through labour. The inmates were spread over approximately 80 subcamps across northern Germany. At least 50,000 succumbed to the inhumane conditions in the camp from hard manual work with insufficient nutrition, extremely unhygienic conditions with widespread disease, and violence from the guards.
After Germany's defeat in 1945, the British Army used the site until 1948 as an internment camp. In 1948, the facility was transferred to the Hamburg prison authority which tore down the camp huts and built a new prison cell block. After being operated as two prisons by the Hamburg authorities from 1950 to 2004, and a period of uncertainty, the site now serves as a memorial.
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.