Björksund Castle is a castle-like manor house in Sweden. Björksund located on Sibbofjärden, northeast of Nyköping in Södermanland County. The estate first belonged to the Grip family, but came in the late Middle Ages through marriage to the Privy Councilor Göran Eriksson Gyllenstierna (1498-1575) of Fågelvik. The estate remained in his family until 1776, when it partly passed by purchase to Count Carl Gabriel Mörner (1737-1828), heir to the Privy Council member and Marshal of the Realm Göran Gyllenstierna (1724–1799).
The manor house was built in Baroque style during 1727. It was designed by French-Swedish architect Joseph Gabriel Destain (died in 1740). Additions in the 1740s were by Baron Carl Hårleman (1700–1753).
The estate covers 4,700 hectares (12,000 acres) and large areas of the archipelago. Björksund Förvaltnings AB also manages a number of properties in Nyköping.
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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.