The Belogradchik Fortress,also known as Kaleto, is an ancient fortress located on the north slopes of the Balkan Mountains, close to the northwestern Bulgarian town of Belogradchik and is the town's primary cultural and historical tourist attraction, drawing, together with the Belogradchik Rocks. It is one of the best-preserved strongholds in Bulgaria and a cultural monument of national importance.
The fortress's walls are over 2 metres thick in the foundation and reaching up to 12 m in height. Three separate fortified yards exist that are connected with each other through gates. The fortress has a total area of 10,210 square metres.
The initial fortress was constructed during the time when the region was part of the Roman Empire. The rock formations in the area served as a natural protection, as fortified walls were practically only built from the northwest and southeast, with the yard being surrounded by rocks up to 70 m high from the other sides.
Initially, the Belogradchik Fortress served for surveillance and not strictly defense. The Bulgarian tsar of Vidin, Ivan Stratsimir extended the old fortress in the 14th century, building fortified garrisons in front of the existing rock massifs. During Stratsimir's rule, the Belogradchik Fortress became one of the most important strongholds in the region, second only to the tsar's capital fortress of Vidin, Baba Vida.
During the Ottoman conquest of Bulgaria, the fortress was captured by the Ottomans in 1396. They were forced to further expand the stronghold due to the intensified hajduk and insurrectionist activity in the region.
Considerable changes to the fortress were made in the early 19th century. These changes were typical for the Ottoman castle architecture of the period, a full reorganization being carried out, as well as additional expansion. Typically European elements were added to the Belogradchik Fortress owing to the French and Italian engineers that participated in the expansion.
The stronghold had an important role in the Ottoman suppression of the Bulgarian Belogradchik Uprising of 1850. It was last used in warfare during the Serbo-Bulgarian War in 1885.
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.