Arles Roman Theatre was built in the time of Augustus and. It had a capacity of seating for 8,000 on 33 tiers of steps. In the early Middle Ages the theater was used as a quarry, and with the material it provided the town wall was erected. Of the rear wall of the stage only a few stumps of pillars and two more or less complete columns remain. Since the theater is now used again during the summer it is protected on the outside by screens and the interior is somewhat spoiled by the necessary technical apparatus.
Most of the relics brought to light during excavation can be seen in the Arles Museum of Antiquity - the most important of these is the 'Venus of Arles', a representation of the goddess Diana, which was discovered near a fountain in 1651 and is now in the Louvre in Paris.
The Roman Theater has been listed as World Heritage Sites since 1981. Arles Roman Theater is now a monument to visit and a place of concerts and events.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.