Under the Aosta old parish church, archaeological diggings brought to light the early Christian cruciform basilica, indicated as Concilium Sanctorum, the Assembly of Saints because it was built on the tombs of some of the early martyrs who were buried in the Roman cemetery area which in itself was built on a protohistoric funeral settlement.
Inside you can see parts of the liturgical structures, the relic platform with the tombs of three bishops who lived between the 5th and 6th centuries (Grato, Agnello, Gallo) and other tomb chambers dating from between the 5th and 8th centuries.
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.