Stara Gradiška was one of the most notorious concentration and extermination camps in Croatia during World War II, mainly due to the crimes committed there against women and children. The camp was specially constructed for women and children of Serb, Jew, and Romani ethnicity. It was established by the Ustaše (Ustasha) regime of the Independent State of Croatia (NDH) in 1941 at the Stara Gradiška prison near the village of Stara Gradiška. The camp was liberated in April 1945 by the Partisans.
According to the list of victims by name of KCL Jasenovac, the Jasenovac memorial site, which includes research as of 2007, the names and data for 12,790 victims of the camp have been established.
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.