The Österbybruk was established by the King Gustav Vasa in the 16th century. Int 1643 it was acquired by Louis de Geer and in his time Österbybruk became the center of weapon manufacturing in Sweden. Later it was owned by Grill and Tamm families.
The manor house of Österbybruk was built in 1763-1780 by the design of Elias Kessler and Erik Palmstedt. There is also a Calvinist church with a mirror hall built in 1735. The industrial milieu with labour cottages, workshops and magazines surrounding the manor is well-preserved.
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.