In which country is the Arch of Hadrian located?

The Arch of Hadrian was erected by the Athenians in honour of the Roman Emperor Hadrian, as a token of their gratitude for the works he had done for their city. The Arch of Hadrian was not built on a random spot, although today it looks as if it was. During ancient times, there went a road under the gateway. The one facade of the Arch of Hadrian demarcated the borders of the historic centre of ancient Athens and the other one of the modern part of the city, where Hadrian had built great public buildings. On the one side of the arch, there is the inscription: “This is Athens, the ancient city of Theseus”, and on the other one, the inscription reads: “This is the city of Hadrian and not of Theseus”. The lower part of the Arch of Hadrian follows the tradition of Roman architecture, whereas the lower one the Greek.