Geisenklösterle is a cave near Blaubeuren and an important site for the European Upper Paleolithic. It is one of a number of caves where early modern humans in the Aurignacian, between 43,000 and 30,000 years ago left traces of early artwork. Geisenklösterle was first archaeologically explored in 1963. Systematic excavations began in 1973, from 1974 to 2002 sponsored by the land of Baden-Württemberg. A 1983 monographical publication summarized the results up to that time.
The cave has six levels belonging to the Aurignacian and seven levels of the Gravettian, besides earlier levels belonging to the Middle Paleolithic and later ones spanning the Magdalenian down to the Middle Ages. The Aurignacian levels date to between 43,000 and 32,000 years ago, and yielded stone tools, artefacts made from antlers, bones and ivory. Among the most notable items are a sculpture of a flutes of bird bone and mammoth ivory, the oldest known musical instruments with an age of 42,000 to 43,000 years.
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.