The Roman walls of Astorga were built at the end of the 3rd century AD or beginning of the next century. The reasons that caused its construction are related to a period of instability experienced in the last years of the Roman Empire, especially originated by the incursions of the barbarian towns from the center of Europe. The walls has a length of 2,2 km.
At the end of the thirteenth century, repairs were documented by the hand of Bishop Nuño, who is credited with an important building task in the city of Astorga. However, we do not know the scope of these contributions, which may have significantly altered the appearance of Roman fortification.
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.