The Monument to 1300 Years of Bulgaria, also known as the Founders of the Bulgarian State Monument, is a large monument built on a plateau above the city of Shumen, Bulgaria. It was built in 1981 to commemorate the 1300th anniversary of the First Bulgarian Empire.
The monument is built in concrete in a Cubist style, and was designed by Bulgarian sculptors Krum Damyanov and Ivan Slavov. It is reached by a processional concrete stairway from Shumen, or by road. It stands at a height of 450 m above sea level and can be seen from 30 km away.
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.