St. George's Basilica is the oldest surviving church building within Prague Castle. The basilica was founded by Vratislaus I of Bohemia in 920. It is dedicated to Saint George.
The basilica was substantially enlarged in 973 with the addition of the Benedictine St. George's Abbey. It was rebuilt following a major fire in 1142. The Baroque façade dates from the late 17th century. A Gothic style chapel dedicated to Ludmila of Bohemia holds the tomb of the saint. The shrines of Vratislav and Boleslaus II of Bohemia are also in the basilica. The abbess of this community had the right to crown the Bohemian queens consort.
The building now houses the 19th century Bohemian Art Collection of National Gallery in Prague. It also serves as a concert hall.
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.