The importance of Coria in Roman times is reflected in its defensive military fortification erected during the Early Roman Empire (1st century). Its layout is the shape of an irregular trapezoid featuring solid walls of granite ashlar masonry, completed with the traditional pattern of stretcher and header bond on their faces and the internal reinforcement with a 3-metres-thick layer of concrete. These walls are defended by twenty-three robust square or cube-shaped towers, each located about 20 or 30 metres apart, surrounding its total perimeter of 1,065 metres. The imposing fortification extends across six hectares of land, as the walls adapt to the uneven terrain with their width occasionally exceeding 4 metres and their height ranging between 10 and 14 metres.
These enormous defensive walls protect its boundaries and give access through four entrance gates: to the north, the Puerta de San Pedro/Puerta del Sol (1st century); to the southwest, the Puerta de la Guía/Puerta de la Ciudad (1st century); to the northwest, the Puerta de San Francisco/Puerta del Rollo (16th century); and to the east, the Puerta del Carmen/Puerta Nueva (16th century). These huge gates are reminiscent of the Roman domination and presence in the territory. Although, throughout its extensive history, this borderland has been subjected to alterations and several episodes of war, the Roman City Walls of Coria, as a whole, are arguably among Europe’s best-preserved fortifications.
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.