The Arch of Hadrian is a monumental gateway resembling – in some respects - a Roman triumphal arch. It spanned an ancient road from the center of Athens, Greece, to the complex of structures on the eastern side of the city that included the Temple of Olympian Zeus.
It has been proposed that the arch was built to celebrate the adventus (arrival) of the Roman Emperor Hadrian and to honour him for his many benefactions to the city, on the occasion of the dedication of the nearby temple of Zeus complex in 131 or 132 AD.
It is not certain who commissioned the arch, although it is probable that the citizens of Athens or another Greek group were responsible for its construction and design.
There are two inscriptions on the arch. The one facing the Acropolis says “This is Theseus’ city”, who was the founder of Athens and the one on the other side says “This is not Theseus city; this is Hadrian’s city”, who was the Roman emperor.
The arch is located 325m southeast of the Acropolis.