Caergwrle Castle is located in the town of Caergwrle, in Flintshire, Wales. Believed to have been preceded by a hill fort, it was constructed in 1277 by Dafydd ap Gruffydd under the reward of King Edward I. The castle had notable features such as D-shaped towers and a circular keep. It was partially destroyed during Dafydd's revolt in 1282 but was restored by Reginald de Grey. Edward gifted the castle to his wife Eleanor of Castile but it suffered damage in a fire. Subsequent repairs were not made, and the castle fell into ruin. Caergwrle Bowl, an archaeological find from the Bronze Age, was discovered in the vicinity in 1823. Excavations were conducted in the late 20th century, and the castle ruins are now maintained by Caergwrle Community Council. The site is listed as a Grade I structure.
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.