The Temple of Olympian Zeus is a former colossal temple at the centre Athens. It was dedicated to Olympian Zeus, a name originating from his position as head of the Olympian gods. Construction began in the 6th century BC (around 520 BC) during the rule of the Athenian tyrants, who envisaged building the greatest temple in the ancient world, but it was not completed until the reign of the Roman Emperor Hadrian in the 2nd century AD, some 638 years after the project had begun. During the Roman period the temple -that included 104 colossal columns- was renowned as the largest temple in Greece and housed one of the largest cult statues in the ancient world.
The temple's glory was short-lived, as it fell into disuse after being pillaged during a barbarian invasion in the 3rd century AD, just about a century after its completion. It was probably never repaired and was reduced to ruins thereafter. In the centuries after the fall of the Roman Empire, it was extensively quarried for building materials to supply building projects elsewhere in the city. Despite this, a substantial part of the temple remains today, notably sixteen of the original gigantic columns, and it continues to be part of a very important archaeological site of Greece.
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.