Located in the Kaylaka Park a few kilometers away from Pleven, Storgosia is ancient fortress dating back to the Roman era and containing the ruins of towers, gates, residential houses, a public storehouse and a large church believed to be constructed around the 4th century. Originally built as a road stop, it became a fortress to protect itself from raids and attacks.
The fortress existed until the end of the 6th century, when the settlement of the Slavs apparently led to its abandonment and during the rule of the Ottoman Empire the fortress was practically destroyed (probably in the 16th century), so that the stones could be used for the construction of a wall around the Turkish barracks in Pleven.
Archaeological excavations have been carried out on the site and a few basic structures of buildings can be seen.
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.