Erstavik estate was first mentioned in 1356 when it was given to Bengt Larsson. It was acquired by Petersen family in the 18th century and his descendants still own the castle. In the Great Northern War 1719 Russian fleet persecuted also Erstavik and several farms were burned down. The current main building is designed by Jean Eric Rehn and it was build in the 1760s. The three-storey house includes an chapel and two wings. interior is well-preserved sample of Rococo and Gustavian style.
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.