The Håga Mound (Hågahögen) or King Björn's Mound is one of the most magnificent remains from the Nordic Bronze Age. Håga mound is approximately 7 metres high and 45 metres across and it was constructed ca 1000 B.C. by the shore of a narrow inlet of the sea (the land has been continually rising since the Ice Age). It was constructed of turfs that had been laid on top of a cairn which was built on top of a wooden chamber containing a hollow oak coffin with the cremated remains of a short man. During the burial there had probably been human sacrifice, the evidence for which is human bones from which the marrow had been removed.
The coffin contained rich unburnt bronze objects such as a Bronze age sword, a razor, two brooches, a number of thickly gilded buttons, two pincers and various other bronze objects. They may all come from the same workshop in Zealand. The mound was excavated 1902-1903 by Oscar Almgren together with the future king Gustaf VI Adolf. Only minor excavations have been done in the Bronze Age settlement but the area contains several house foundations in stone. The findings from Hågahögen were stored in The Swedish Museum of National Antiquities.
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.