The Arch of Hadrian (Greek: Αψίδα του Αδριανού, romanized: Apsida tou Adrianou), most commonly known in Greek as Hadrian’s Gate (Greek: Πύλη του Αδριανού, romanized: Pyli tou Adrianou), 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 honor him for his many benefactions to the city, on the occasion of the dedication of the nearby temple complex in 131 or 132 AD. It is not certain who commissioned the arch, although it is probable that the citizens of Athens. There were two inscriptions on the arch, facing in opposite directions, naming both Theseus and Hadrian as founders of Athens. While it is clear that the inscriptions honor Hadrian, it is uncertain whether they refer to the city as a whole or to the city in two parts: one old and one new. The early idea, however, that the arch marked the line of the ancient city wall, and thus the division between the old and the new regions of the city, has been shown to be false by further excavation. The arch is located 325m southeast of the Acropolis.
Pláka (Greek: Πλάκα) is the old historical neighborhood of Athens, clustered around the northern and eastern slopes of the Acropolis, and incorporating labyrinthine streets and neoclassical architecture. Plaka is built on top of the residential areas of the ancient town of Athens. It is known as the “Neighborhood of the Gods” due to its proximity to the Acropolis and its many archaeological sites.
The name “Plaka” was not in use until after the Greek War of Independence. Instead, the Athenians of that time referred to the area by various names such as Alikokou, Kontito, Kandili, or by the names of the local churches. The name Plaka became commonly in use in the first years of the rule of King Otto. The origin of the name is uncertain: it has been theorized to come from Arvanite “Pliak Athena”, meaning “Old Athens”, or from the presence of a “plaque” which once marked its central intersection.