The island of Helgö is probably best known for a major archaeological area. The old trading town on Helgö began to emerge around the year 200 AD, 500 years before the well-known Birka. The first archaeological excavaton in 1954 found not only remains of the early settlement, but also a workshop area that became of international interest.
Among the finds were a small Buddha statuette from North India and a christening scoop from Egypt, both dating from 6th century. The Indian Buddha statuette, the Irish crozier and the Egyptian scoop which were found on Helgö, are presently on display in the Swedish Museum of National Antiquities in Stockholm.
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.