Hartheim Castle was built by Jakob von Aspen in 1600, and it is a prominent Renaissance castle in the country. The building became notorious as one of the Nazi Euthanasia killing centers, where the killing program Action T4 took place.
Until the middle of the 14th century the site consisted mainly of just one tower, subsequently a residence was added and it was surrounded by a small wall with ramparts and ditches. After changing hands several times the castle ended up in the possession of the Aspen family, who probably built the castle into its present shape. At the beginning of the 1690s they had a completely new castle built conforming to perceptions of the ideal Renaissance style with a regular four-winged building with four polygonal corner towers and a higher central tower.
In 1799 George Adam, Prince of Starhemberg, purchased the castle. But by 1862 the castle was in a rather poor condition. In 1898 Camillo Henry, Prince of Starhemberg, made a present of the castle building, the outbuildings and some land to the Upper Austrian State Welfare Society.
Following Hitler's euthanasia decree in 1939, Hartheim was selected as one of six euthanasia centres in the Reich. Between May 1940 and December 1944, approximately 18,000 people physically and mentally disabled were killed at Schloss Hartheim by gassing and lethal injection as part of the T-4 Euthanasia Program. These included about twelve thousand prisoners from the Dachau and Mauthausen concentration camps who were sent here to be gassed, as were hundreds of women sent from Ravensbrück concentration camp in 1944, predominantly sufferers of TB and those deemed mentally infirm. The castle was regularly visited by the psychiatrists Karl Brandt, Professor of Psychiatry at Würzburg University, and Werner Heyde. In December 1944 Schloss Hartheim was closed as an extermination centre and restored as a sanatorium after being cleared of evidence of the crimes committed therein.
After World War II, the building was converted into apartments. Beginning in 1969, the gas chamber was opened to visitors. Hartheim Castle is now a Memorial Site dedicated to the thousands of physically and mentally handicapped persons who were murdered here by the Nazis.
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.