Tynnelsö estate was first mentioned in 1282. Since 1306 it belonged to the Diocese of Strängnäs. During the 1490s bishop Kort Rogge built the first stone castle and the first floor is still the original. In 1522 Tynnelsö was acquired by Gustav Vasa and it belonged to the royal family until 1636, but was again later returned to the crown (during the Great Reduction in 1681). The current square-formed castle was built to the present appearance in the 1590s. In the 18th century Tynnelsö castle was abandoned and left to decay. The major restoration was made in 1826-1827.
Today the castle is closed due the restoration, which should be started in future. The surrounding garden includes lot of lime trees and a villa built in 1876.
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.