Trapezitsa is located on a hill around which the Yantra River winds in Veliko Tarnovo. Steep cliffs make the place difficult to access. The first fortified settlement, built on the hill, dates from the late Chalcolithic Age (4200-4000 BC). During the Bronze Age and the Early Iron Age there was a Thracian settlement on the hill.
The first traces of the medieval defense system on Trapezitsa date back to the 12th century AD. Main fortifications were built in the 13th and 14th centuries, during the Second Bulgarian Empire. Then Tarnovo became the capital of Bulgaria, and Trapezitsa was the second most important citadel of the city, after Tsarevets.
In 1195 Tsar Ivan Asen I transferred the relics of St. Ivan Rilski to a church built on Trapezitsa Hill. A monastery was built around it, bearing the name of the saint. Tsar Kaloyan transferred the relics of St. Gabriel of Lesnovo to the church “St. Apostles ”on Trapezitsa.
The hill is surrounded by a thick fortress wall made of crushed stone. Its height reached 6 meters. The fortress was entered through four entrances. The main entrance to Trapezitsa was located on the southeast side and was connected to Tsarevets by a bridge over the Yantra River opposite the Holy Forty Martyrs Church.
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.