Agilkia Island in the reservoir of the Old Aswan Dam along the Nile River is the present site of the relocated ancient Egyptian temple complex of Philae. Partially to completely flooded by the old dam's construction in 1902, the Philae complex was dismantled and relocated to Agilkia island, as part of a wider UNESCO project related to the 1960s construction of the Aswan High Dam and the eventual flooding of many sites posed by its large reservoir upstream. To allow Agilkia island to accominate the relocated temple, the island was leveled to match the old contours of Philae island as best as possible, which required the removal of the top of the island.
The most ancient was a temple for Isis, built in the reign of Nectanebo I during 380–362 BC, which was approached from the river through a double colonnade. Nekhtnebef was his ancient Egyptian royal titulary and he became the founding pharaoh of the Thirtieth and last native dynasty when he deposed and killed Nepherites II.
For the most part, the other ruins date from the Ptolemaic Kingdom, more especially with the reigns of Ptolemy II Philadelphus, Ptolemy V Epiphanes, and Ptolemy VI Philometor (282–145 BC), with many traces of Roman work in Philae dedicated to Ammon-Osiris.
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.