The Temple of Olympian Zeus, located in the centre of Athens, was the biggest in Greece and its construction phase lasted for more than 700 years.
It is definitely among the monuments that you should pay a visit to during your stay in the city. Also known as Olympieion or Columns of Olympian Zeus, it was acknowledged as being the biggest temple during the Hellenistic and Roman periods and to this day, it remains one of the city's most significant monuments. Its construction began during 6th century BC and was completed in 2nd century AD by Roman Emperor Hadrian who adored Greek civilisation!
With Pentelic marble as its dominating material, the temple originally comprised of 104 columns in Corinthian order; only 15 of them stand there until today. Unfortunately, neither the gold and ivory statue of Zeus nor the elaborate busts of famous men have been saved. Nowadays, you can enter the unified site of Olympieion and Parilissia Sanctuaries via the gate house on Vasilissis Olgas Avenue.