The Ancient theatre of Ohrid from the Hellenistic period was built in 200 BC and is the only Hellenistic-type theatre in the North Macedonia. It is unclear how many people the original theater used to seat, as only the lower section still exists. The open theater has a perfect location: the two hills that surround it keep it protected from winds that could interfere with acoustics during performances.
During Roman times, the theater was also used for gladiator fights. However, since the theater was also a site of executions of Christians by the Romans, it rapidly turned to a highly disliked site by the locals. In fact, as a result of this dislike, the theater was abandoned and buried by the locals after the demise of the Roman Empire. This allowed for most of the structure to be well preserved, only to be uncovered accidentally in the 1980s. Namely, during construction work around some of the houses in the area, large stone blocks with carvings of the Greek god Dyonisius and the muses were showing up, which led archaeologists to believe that a Greek theater (Dionysus and the muses were related to the performance arts) must have been located nearby.
Since the late 1980s, the theater is again a site of public performances, such as plays, concerts, operas, ballet performances. Recently, high-profile cultural performances such as those by the Bolshoi and José Carreras take place each summer as part of the Ohrid Summer Festival.
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.