Temple of Olympian Zeus
Though the temple's construction to the ruler of the pantheon began in 515 BC, it was eventually completed by the Roman Emperor Hadrian 700 years afterwards. In AD 131 the Athenians built a Hadrian's Arch next to the temple, the west side of which inscribed "This is Athens, the ancient city of Theseus," and the east side "This is the city of Hadrian and not of Theseus", distinguishing the cities of ancient legend and modern reality.